Zebra ZQ510 ZQ520

Home » Product » Barcode Printer » Mobile Printer » Zebra ZQ510 ZQ520

Zebra ZQ510, ZQ520 Mobile Printers
zq500 mobile printers
Zebra’s compact ZQ500 Series mobile printers are the industry’s most rugged, featuring a military-grade design, the latest connectivity options and user friendly functionality to keep you operating in the most challenging environments.

pdf icon

Description

Zebra ZQ510 ZQ520 SERIES MOBILE PRINTERS

Extreme environments and bangs and bumps are no match for these lightweight, compact printers. Zebra’s ZQ510™ and ZQ520™ printers are the most rugged printers available. They perform in the widest operating temperature range in the industry and can withstand repeated drops to concrete from up to 6.6 feet. Water spray is no match with their IP54 rating. Featuring Zebra’s Link-OS® environment, these premium printers are easy to integrate, manage and maintain. With large buttons and a user-friendly interface, they are easy to operate, even when wearing gloves.

RUGGED DESIGN

The ZQ500 printers are lightweight, yet engineered to handle the bumps, drops and collisions that are part of the job. The printers feature a patented military design that meets third-party-verified MIL-STD 810g military standards for shock, vibration and temperature exposure. The printers can withstand repeated drops to concrete from 6.6’ on multiple sides.

ENVIROMENTAL ENDURANCE

Zebra not only protects your hardware, but also your operational uptime. The ZQ500 printers meet IP54-rating for resistance to dust and liquids that are common in mobile environments—from dirt in the field to crumbs in a service vehicle. And with cold temperature compensation, the ZQ500 Series automatically optimises and balances print speed and print quality in cold temperatures.

OPTIMISED PRINTING POWER

The ZQ500 printers are Zebra’s first products to support a secondary Bluetooth communication channel, an innovative feature that allows one channel to send print jobs to the printer while a second channel performs additional functions such as device management. The ZQ500 printers also feature “draft mode” which optimises the printing speed (up to 5 inches per minute) for text-only printing.

ZQ510 Mobile Printer 

ZEBRA’S MOST RUGGED PREMIUM PRINTER FOR 3″ APPLICATIONS

optimised for tough environments where a high duty-cycle 3″ (72mm) receipt or invoice is needed, and can also print labels for medium-duty-cycle applications.

  • PRINT WIDTH

    2.83″/72 mm

  • MEDIA ROLL OUTER DIAMETER

    2.0″/51 mm

  • PRINT SPEED

    Up to 5″/127mm per second

  • WEIGHT

    1.39 lbs/0.63 kg with battery

  • DURABILITY

    IP54-rated for dust and liquid protection

    (IP65-rated with the exoskeleton case)

    6.6′ (2m) drops to concrete multiple times

    (10′ / 3m with the exoskeleton case)

    Tumble-tested

  • BATTERY CAPACITY

    PowerPrecision Plus 2450 mAh removable Lithium Ion Smart Battery (7.4V)
    (4900 mAh extended battery optional)

ZQ520 Mobile Printer 

ZEBRA’S MOST RUGGED PREMIUM PRINTER FOR 4″ APPLICATIONS

optimised for tough environments where a high duty-cycle 4″ (104mm) receipt or invoice is needed, and can also print labels for medium duty-cycle applications.

  • PRINT WIDTH

    4.1″ / 105mm

  • MEDIA ROLL OUTER DIAMETER

    2.24″/57 mm

  • PRINT SPEED

    Up to 5″/127mm per second

  • WEIGHT

    1.73lbs/0.79 kg with battery

  • DURABILITY

    IP54-rated for dust and liquid protection (IP65-rated with the exoskeleton case)

    6.6′ (2m) drops to concrete multiple times

    (10′ / 3m with the exoskeleton case)

    Tumble-tested

  • BATTERY CAPACITY

    PowerPrecision Plus 2450 mAh removable Lithium Ion Smart Battery (7.4V)
    (4900 mAh extended battery optional)

pdf icon

Resource

文件
軟件
驅動程式
工具

Part Number

Standard Configurations

Part Number Description
ZQ51-AUE000B-00 DT Printer ZQ510; Bluetooth 4.0, Linered Platen, English, Grouping B
ZQ51-AGE000B-00 DT Printer ZQ510; Bluetooth 4.0, Linered Platen, Chinese/Japanese/Korean, Grouping B
ZQ51-AUN010A-00 DT Printer ZQ510; Dual Radio (Bluetooth 3.0/WLAN), Linered Platen, Active NFC, English, Grouping A
ZQ51-AUE000A-00 DT Printer ZQ510; Bluetooth 4.0, Linered Platen, English, Grouping A
ZQ51-AGN010J-00 DT Printer ZQ510; Dual Radio (Bluetooth 3.0/WLAN), Linered Platen, Active NFC, Chinese/Japanese/Korean, Grouping J
ZQ51-ATE000B-00 DT Printer ZQ510; Bluetooth 4.0, Linered Platen, Thai, Grouping B
ZQ51-AGN010A-00 DT Printer ZQ510; Dual Radio (Bluetooth 3.0/WLAN), Linered Platen, Active NFC ,Chinese/Japanese/Korean, Grouping A
ZQ51-ATN010B-00 DT Printer ZQ510; Dual Radio (Bluetooth 3.0/WLAN), Linered Platen, Active NFC, Thai, Grouping B
ZQ51-AGN010B-00 DT Printer ZQ510; Dual Radio (Bluetooth 3.0/WLAN), Linered Platen, Active NFC, Chinese/Japanese/Korean, Grouping B
ZQ51-AGE000A-00 DT Printer ZQ510; Bluetooth 4.0, Linered Platen, Chinese/Japanese/Korean, Grouping A
ZQ51-AUN010B-00 DT Printer ZQ510; Dual Radio (Bluetooth 3.0/WLAN), Linered Platen, Active NFC, English, Grouping B

Accessories

Part Number Description
BTRY-MPP-34MA1-01 3250 mAh battery for ZQ610/620 and ZQ500 Series
P1031365-041 KIT,ACC,QLn/ZQ5/ZQ6 Mobile,AC ADAPTER,UK (type G) CORD
SAC-MPP-3BCHGIN1-01 3 slot battery charger; ZQ600, QLn and ZQ500 Series; Includes power supply and India power cord
P1031365-024 KIT ACC,QLn/ZQ5/ZQ6,AC ADAPTER,US (type A) Cord
P1081280-008 KIT,Acc,Mobile,AC ADAPTER,India Cord
SAC-MPP-3BCHGUS1-01 3 slot battery charger; ZQ600, QLn and ZQ500 Series; Includes power supply and US power cord
P1031365-094 KIT ACC,QLn/ZQ5/ZQ6,AC ADAPTER,JAPAN CORD
SAC-MPP-1BCHGUS1-01 1 slot battery charger for ZQ600, QLn and ZQ500 Series and US power cord
BT16899-1 QL, RW, and ZQ5 Series, 8 Hand Strap
SAC-MPP-3BCHGUK1-01 3 slot battery charger; ZQ600, QLn and ZQ500 Series; Includes power supply and UK power cord
P1063406-030 KIT, Acc DC-DC vehicle adapter, open ended, 12~24V,QLn/ZQ5/ZQ6 Series
P1063406-031 KIT, Acc DC-DC vehicle adapter, CIG,12~24V, QLn/ZQ5/ZQ6
BTRY-MPP-34MAI1-01 Kit ACC, QLN2/3, ZQ511/21, ZQ510/20, ZQ610/20 Spare Smart Battery, India Only
P1063406-038 KIT, Acc Soft Case, ZQ510
P1031365-093 KIT ACC,QLn/ZQ5/ZQ6,AC ADAPTER,TAIWAN CORD
P1031365-040 KIT ACC,QLn/ZQ5/ZQ6,Mobile AC POWER ADAPTER,CN CORD
P1063406-014 KIT, Acc Platen Cartridge, Linered, ZQ510
P1031365-042 KIT ACC,QLn/ZQ5/ZQ6,Mobile AC ADAPTER, EU CORD
P1063406-045 KIT, Acc Micro,USB,B, to,USB,A,Plug,1.8M, ZQ500 Series
AC18177-5 QL and RW Series Quad Charger (for charging up to 4 batteries)
P1031365-069 KIT, Acc QLn220/320, ZQ610/620, and ZQ500 Series Spare Extended Battery with LED’s
AK18913-003 Li-Ion DC/DC 15 – 60 VDC adapter (for use with forklifts) P4T/QLn/ZQ6
AK18913-002 Kit, Acc, AC adaptor, US cable (for use with P4T or spare power supply for ZQ5 4-bay Power Station and QLn/ZQ6 4-bay Ethernet cradle)
P1063406-043 KIT, Acc Exoskeleton Case with Shoulder Strap, ZQ510
P1063406-052 KIT, Acc 4-BAY Power Station, UK (type G) Cord, ZQ500 Series
P1063406-024 KIT,Acc Media Disk Support,19mm,ZQ500 Series,(Set of 3)
P1063406-041 KIT, Acc D-Ring Adapter Belt Attachment Strap, ZQ500 Series
AC18177-7 Quad Charger (charges up to 4 batteries), Japan
P1031365-043 KIT ACC,QLn/ZQ5/ZQ6,Mobile AC ADAPTER, AUSTRALIA (type I) CORD
P1063406-053 KIT, Acc 4-BAY Power Station, Europe (type C) / Chile Cord, ZQ500 Series
P1063406-063 Kit, Acc, RAM Mount Base Plate ZQ500 Series
P1063406-021 KIT, Acc, Magnetic Card Reader, ZQ510
P1063406-026 KIT, Acc Swivel Lock Adapter, ZQ500 Series
AK18913-009 Kit, Acc, AC adaptor, China cable (for use with P4T or spare power supply for ZQ5 4-bay Power Station)
P1063406-061 KIT, Acc Battery Eliminator Cradle with USB lock, ZQ500 Series
P1063406-133 Kit, Accessory Power Adapter for Mobile Battery Eliminator, 12~48V, Cigarette Lighter, New Resistor
P1031365-405 KIT ACC,QLn/ZQ5/ZQ6,AC ADAPTER,KOREA CORD
AK17463-002 RAM MOUNT VEHICLE CRADLE
AC18177-4 Quad Charger (charges up to 4 batteries), China
AK18913-010 Kit, Acc, AC adaptor, Australia/New Zealand cable (for use with P4T or spare power supply for ZQ5 4-bay Power Station)
P1031365-096 KIT ACC SC2 LI-ION SMART CHARGER, JAPAN CORD
P1063406-035 KIT, Acc Rugged Shoulder Strap with Metal Clips, 56 inch
P1063406-032 KIT, Acc Mobile Battery Eliminator, Dummy Battery Pack
P1051921 KIT, ACC SHOULDER STRAP for QL, RW, P4T, ZQ510 and ZQ520
P1031365-065 Kit ACC SC2 Li-ION SMART CHARGER, EU/CHILE (type C) cord
P1031365-063 Kit ACC SC2 Li-ION SMART CHARGER, US (type A) cord
SAC-MPP-6BCHUS1-01 Two 3 slot battery chargers (charges 6 batteries) with power supply and Y cable; ZQ600, QLn or ZQ500. US power cord included
P1063406-039 KIT, Acc 2-roll Media Storage Case
VAM-MPP-VHCH1-01 Vehicle adapter for ZQ500/ZQ600/QLn printers and TC7X mobile computer; includes open ended and cigarette lighter adapter cables
P1063406-040 KIT, Acc Belt Clip, ZQ500 Series (Set of 5)
P1058390-2 KIT, ACC Power Supply for Quad Charger W/O Cord
P1050667-142 Kit, Accessory, Power Adapter for Mobile Battery Eliminator, 12~48V, open ended, New Resistor
P1063406-020 KIT, Acc, Connector Door, I/O, ZQ510, (15)
P1063406-062 KIT, Acc Vehicle Cradle with USB lock, ZQ500 Series
SAC-MPP-6BCHEU1-01 Two 3 slot battery chargers (charges 6 batteries) with power supply and Y cable; ZQ600, QLn or ZQ500. EU power cord included
AK18913-007 Kit, Acc, AC adaptor, European cable (for use with P4T or spare power supply for ZQ5 4-bay Power Station)
AC18177-1 Quad Charger (charges up to 4 batteries), UK
P1063406-025 KIT,Acc Media Disk Support,12.5mm,ZQ500 Series,(Set of 3)
AC18177-2 Quad Charger (charges up to 4 batteries), Europe
P1063406-034 KIT, Acc Convert Cable, 6 inch, ZQ500 Series
P1063406-049 KIT, Acc Type-A USB to Serial DB9 Cable, ZQ500 Series
AC18177-3 Quad Charger (charges up to 4 batteries), Australia
AC18177-6 Quad Charger (charges up to 4 batteries), Mexico/Central/South America
P1031365-064 Kit ACC SC2 Li-ION SMART CHARGER, UK (type G) cord
SAC-MPP-3BCHGEU1-01 3 slot battery charger; ZQ600, QLn and ZQ500 Series; Includes power supply and EU power cord
P1058390-1 KIT, ACC Power Supply for Quad Charger With US Cord
P1063406-047 KIT, Acc Micro,USB,A to USB,A, Rec., ZQ500 Series
AK18913-006 Kit, Acc, AC adaptor, UK cable (for use with P4T or spare power supply for ZQ5 4-bay Power Station)
P1063406-042 KIT, Acc RAM Arm Mounting Plate, ZQ500 Series
P1063406-054 KIT, Acc 4-BAY Power Station, Australia (type I) Cord, ZQ500 Series
P1063406-146 Kit, Accessory Micro,USB,B to USB,A,Plug, 3.5M, ZQ500 Series, w/20AWG Wires
AK18913-012 Kit, Acc, AC Adapter, Japan cable (for use with P4T or spare power supply for ZQ5 4-bay Power Station)
SAC-MPP-3BCHGKR1-01 3 slot battery charger; ZQ600, QLn and ZQ500 Series; Includes power supply and Korea power cord
P1063406-027 KIT, Acc 4-BAY Power Station, US (type A) Cord, ZQ500 Series

Spare Parts

Part Number Description
BTRY-MPP-34MAI1-01 Kit ACC, QLN2/3, ZQ511/21, ZQ510/20, ZQ610/20 Spare Smart Battery, India Only
SAC-MPP-3BCHGKR1-01 3 slot battery charger; ZQ600, QLn and ZQ500 Series; Includes power supply and Korea power cord

Standard Configurations

Part Number Description
ZQ52-AUN010B-00 DT Printer ZQ520; Dual Radio (Bluetooth 3.0/WLAN), Linered Platen, Active NFC, English, Grouping B
ZQ52-AGN010B-00 DT Printer ZQ520; Dual Radio (Bluetooth 3.0/WLAN), Linered Platen, Active NFC, Chinese/Japanese/Korean, Grouping B
ZQ52-AUE000B-00 DT Printer ZQ520; Bluetooth 4.0, Linered Platen, English, Grouping B
ZQ52-AGN010A-00 DT Printer ZQ520; Dual Radio (Bluetooth 3.0/WLAN), Linered Platen, Active NFC, Chinese/Japanese/Korean, Grouping A
ZQ52-ATN010B-00 DT Printer ZQ520; Dual Radio (Bluetooth 3.0/WLAN), Linered Platen, Active NFC, Thai, Grouping B
ZQ52-AUE002A-00 DT Printer ZQ520; BT 4.0/Linered/Extended Battery, English, Grouping A
ZQ52-AUN010A-00 DT Printer ZQ520; Dual Radio (Bluetooth 3.0/WLAN), Linered Platen, Active NFC, English, Grouping A
ZQ52-AGN010J-00 DT Printer ZQ520; Dual Radio (Bluetooth 3.0/WLAN), Linered Platen, Active NFC, Chinese/Japanese/Korean, Grouping J
ZQ52-AGE000A-00 DT Printer ZQ520; Bluetooth 4.0, Linered Platen, Chinese/Japanese/Korean, Grouping A
ZQ52-ATE000B-00 DT Printer ZQ520; Bluetooth 4.0, Linered Platen, Thai, Grouping B
ZQ52-AUN100A-00 DT Printer ZQ520; Dual Radio (Bluetooth 3.0/WLAN), Linerless Platen, English, Grouping A
ZQ52-AUE000A-00 DT Printer ZQ520; Bluetooth 4.0, Linered Platen, English, Grouping A

Accessories

Part Number Description
BTRY-MPP-34MA1-01 3250 mAh battery for ZQ610/620 and ZQ500 Series
P1031365-041 KIT,ACC,QLn/ZQ5/ZQ6 Mobile,AC ADAPTER,UK (type G) CORD
P1063406-037 KIT, Acc Soft Case, ZQ520
SAC-MPP-3BCHGIN1-01 3 slot battery charger; ZQ600, QLn and ZQ500 Series; Includes power supply and India power cord
P1031365-024 KIT ACC,QLn/ZQ5/ZQ6,AC ADAPTER,US (type A) Cord
P1081280-008 KIT,Acc,Mobile,AC ADAPTER,India Cord
SAC-MPP-3BCHGUS1-01 3 slot battery charger; ZQ600, QLn and ZQ500 Series; Includes power supply and US power cord
P1031365-094 KIT ACC,QLn/ZQ5/ZQ6,AC ADAPTER,JAPAN CORD
SAC-MPP-1BCHGUS1-01 1 slot battery charger for ZQ600, QLn and ZQ500 Series and US power cord
BT16899-1 QL, RW, and ZQ5 Series, 8 Hand Strap
SAC-MPP-3BCHGUK1-01 3 slot battery charger; ZQ600, QLn and ZQ500 Series; Includes power supply and UK power cord
P1063406-030 KIT, Acc DC-DC vehicle adapter, open ended, 12~24V,QLn/ZQ5/ZQ6 Series
P1063406-031 KIT, Acc DC-DC vehicle adapter, CIG,12~24V, QLn/ZQ5/ZQ6
BTRY-MPP-34MAI1-01 Kit ACC, QLN2/3, ZQ511/21, ZQ510/20, ZQ610/20 Spare Smart Battery, India Only
P1031365-040 KIT ACC,QLn/ZQ5/ZQ6,Mobile AC POWER ADAPTER,CN CORD
P1031365-042 KIT ACC,QLn/ZQ5/ZQ6,Mobile AC ADAPTER, EU CORD
P1063406-045 KIT, Acc Micro,USB,B, to,USB,A,Plug,1.8M, ZQ500 Series
AC18177-5 QL and RW Series Quad Charger (for charging up to 4 batteries)
P1031365-069 KIT, Acc QLn220/320, ZQ610/620, and ZQ500 Series Spare Extended Battery with LED’s
AK18913-003 Li-Ion DC/DC 15 – 60 VDC adapter (for use with forklifts) P4T/QLn/ZQ6
AK18913-002 Kit, Acc, AC adaptor, US cable (for use with P4T or spare power supply for ZQ5 4-bay Power Station and QLn/ZQ6 4-bay Ethernet cradle)
P1063406-052 KIT, Acc 4-BAY Power Station, UK (type G) Cord, ZQ500 Series
P1063406-024 KIT,Acc Media Disk Support,19mm,ZQ500 Series,(Set of 3)
P1063406-041 KIT, Acc D-Ring Adapter Belt Attachment Strap, ZQ500 Series
AC18177-7 Quad Charger (charges up to 4 batteries), Japan
P1031365-043 KIT ACC,QLn/ZQ5/ZQ6,Mobile AC ADAPTER, AUSTRALIA (type I) CORD
P1063406-053 KIT, Acc 4-BAY Power Station, Europe (type C) / Chile Cord, ZQ500 Series
P1063406-063 Kit, Acc, RAM Mount Base Plate ZQ500 Series
P1063406-026 KIT, Acc Swivel Lock Adapter, ZQ500 Series
AK18913-009 Kit, Acc, AC adaptor, China cable (for use with P4T or spare power supply for ZQ5 4-bay Power Station)
P1063406-061 KIT, Acc Battery Eliminator Cradle with USB lock, ZQ500 Series
P1063406-133 Kit, Accessory Power Adapter for Mobile Battery Eliminator, 12~48V, Cigarette Lighter, New Resistor
P1031365-405 KIT ACC,QLn/ZQ5/ZQ6,AC ADAPTER,KOREA CORD
AK17463-002 RAM MOUNT VEHICLE CRADLE
AC18177-4 Quad Charger (charges up to 4 batteries), China
AK18913-010 Kit, Acc, AC adaptor, Australia/New Zealand cable (for use with P4T or spare power supply for ZQ5 4-bay Power Station)
P1031365-096 KIT ACC SC2 LI-ION SMART CHARGER, JAPAN CORD
P1063406-035 KIT, Acc Rugged Shoulder Strap with Metal Clips, 56 inch
P1063406-032 KIT, Acc Mobile Battery Eliminator, Dummy Battery Pack
P1072539-014 KIT, Acc, Magnetic Card Reader, ZQ520
P1051921 KIT, ACC SHOULDER STRAP for QL, RW, P4T, ZQ510 and ZQ520
P1031365-065 Kit ACC SC2 Li-ION SMART CHARGER, EU/CHILE (type C) cord
P1031365-063 Kit ACC SC2 Li-ION SMART CHARGER, US (type A) cord
P1072539-009 KIT, Acc Platen Cartridge, Linerless, ZQ520
SAC-MPP-6BCHUS1-01 Two 3 slot battery chargers (charges 6 batteries) with power supply and Y cable; ZQ600, QLn or ZQ500. US power cord included
P1063406-039 KIT, Acc 2-roll Media Storage Case
VAM-MPP-VHCH1-01 Vehicle adapter for ZQ500/ZQ600/QLn printers and TC7X mobile computer; includes open ended and cigarette lighter adapter cables
P1063406-040 KIT, Acc Belt Clip, ZQ500 Series (Set of 5)
P1058390-2 KIT, ACC Power Supply for Quad Charger W/O Cord
P1050667-142 Kit, Accessory, Power Adapter for Mobile Battery Eliminator, 12~48V, open ended, New Resistor
P1063406-062 KIT, Acc Vehicle Cradle with USB lock, ZQ500 Series
SAC-MPP-6BCHEU1-01 Two 3 slot battery chargers (charges 6 batteries) with power supply and Y cable; ZQ600, QLn or ZQ500. EU power cord included
AK18913-007 Kit, Acc, AC adaptor, European cable (for use with P4T or spare power supply for ZQ5 4-bay Power Station)
AC18177-1 Quad Charger (charges up to 4 batteries), UK
P1063406-025 KIT,Acc Media Disk Support,12.5mm,ZQ500 Series,(Set of 3)
AC18177-2 Quad Charger (charges up to 4 batteries), Europe
P1063406-034 KIT, Acc Convert Cable, 6 inch, ZQ500 Series
P1063406-049 KIT, Acc Type-A USB to Serial DB9 Cable, ZQ500 Series
P1072539-008 KIT, Acc Platen Cartridge, Linered, ZQ520
AC18177-3 Quad Charger (charges up to 4 batteries), Australia
AC18177-6 Quad Charger (charges up to 4 batteries), Mexico/Central/South America
P1063406-044 KIT, Acc Exoskeleton Case with Shoulder Strap, ZQ520
P1031365-064 Kit ACC SC2 Li-ION SMART CHARGER, UK (type G) cord
SAC-MPP-3BCHGEU1-01 3 slot battery charger; ZQ600, QLn and ZQ500 Series; Includes power supply and EU power cord
P1058390-1 KIT, ACC Power Supply for Quad Charger With US Cord
P1063406-047 KIT, Acc Micro,USB,A to USB,A, Rec., ZQ500 Series
AK18913-006 Kit, Acc, AC adaptor, UK cable (for use with P4T or spare power supply for ZQ5 4-bay Power Station)
P1072539-013 KIT, Acc, Connector Door, I/O, ZQ520, (15)
P1063406-042 KIT, Acc RAM Arm Mounting Plate, ZQ500 Series
P1063406-054 KIT, Acc 4-BAY Power Station, Australia (type I) Cord, ZQ500 Series
P1063406-146 Kit, Accessory Micro,USB,B to USB,A,Plug, 3.5M, ZQ500 Series, w/20AWG Wires
AK18913-012 Kit, Acc, AC Adapter, Japan cable (for use with P4T or spare power supply for ZQ5 4-bay Power Station)
SAC-MPP-3BCHGKR1-01 3 slot battery charger; ZQ600, QLn and ZQ500 Series; Includes power supply and Korea power cord
P1063406-027 KIT, Acc 4-BAY Power Station, US (type A) Cord, ZQ500 Series

Spare Parts

Part Number Description
BTRY-MPP-34MAI1-01 Kit ACC, QLN2/3, ZQ511/21, ZQ510/20, ZQ610/20 Spare Smart Battery, India Only
SAC-MPP-3BCHGKR1-01 3 slot battery charger; ZQ600, QLn and ZQ500 Series; Includes power supply and Korea power cord

Certificate

Leave Your Message

    Go to Top