2/19/2017 new driver models for direct download:967
A4tech 0k-521 5 stars review"The best driver WIKI ever! I wil keep coming back for sure."Eric Smalter, Boston, MA
Supported languages for A4tech 0k-521
Certifications for A4tech 0k-521
5 stars for A4tech 0k-521 "WOW! Finally my PC got up to speed!" Melany Kim 7/18/2015

Checking...for 2/19/2017 Updates

All drivers on are updated on daily basis.

However, a new version of A4tech 0k-521 might have been uploaded since our last site update.

A4tech 0k-521 Driver Download

Windows Compatibility for A4tech 0k-521 driver

A4tech 0k-521 Driver Details:

A4tech 0k-521 File Name:

A4tech 0k-521 Driver Version: 6281U6M9X

A4tech 0k-521 ZIP Size: 129.kb

Manufacturer: A4tech

A4tech 0k-521 was fully scanned at: 2/13/2017
Scan Status: driver download scanOK

A4tech 0k-521 special revision for: Windows XP Tablet PC Edition 64 bit, Windows 8 Pro 32 bit, Windows 7 Professional 32 bit, Windows 7 Home Basic 32 bit, Windows XP Professional N 32 bit, Windows Vista Business 32 bit, Windows Vista Enterprise (Microsoft Windows NT 6.0.6000.0) 64 bit, Windows Vista Starter 64 bit, Windows 7 Ultimate 64 bit, Windows 10 64 bit, Windows XP Home Edition, for home desktops and laptops 32 bit, Windows 7 Starter 32 bit

A4tech 0k-521 Download Stats:

Driver Uploaded: 12/28/2016

Direct Downloads: 251
Most Recent Download: 2/18/2017
Managed Downloads: 3826
Most Recent Download: 2/18/2017
Download Mirrors: 2
Current Delay: 7 Seconds
Driver License: FS {free software}

Direct Download Success Stats:

Reports Issued By 249/251 Users

Success Reported By 40/249 Users

Driver Download Score72/100

Driver Installation Score73/100

Overall preformance Score61/100

A4tech 0k-521 21 Thumbs Up21Thumbs
A4tech 0k-521 5 Thumbs Down5Thumbs
A4tech 0k-521 driver direct download was reported as adequate by a large percentage of our reporters, so it should be good to download and install.

Installation Manager Success Stats:

Reports Issued By 3374/3826 Users

Success Reported By 2754/3374 Users

Driver Download Score91/100

Driver Installation Score81/100

Overall preformance Score95/100

A4tech 0k-521 2695 Thumbs Up2695Thumbs
A4tech 0k-521 156 Thumbs Down156Thumbs
A4tech 0k-521 driver installation manager was reported as very satisfying by a large percentage of our reporters, so it is recommended to download and install.


1. Direct Download

Select your OS and press "Download".

This option requires basic OS understanding.
Select Your Operating System, download zipped files, and then proceed to
manually install them.
Recommended if A4tech 0k-521 is the only driver on your PC you wish to update.


2. Driver Installation Manager

This option requires no OS understanding.
Automatically scans your PC for the specific required version of A4tech 0k-521 + all other outdated drivers, and installs them all at once.

Please help us maintain a helpfull driver collection.
After downloading and installing A4tech 0k-521, or the driver installation manager, take a few minutes to send us a report:
* Only registered users can upload a report.

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A4tech 0k-521 may sometimes be at fault for other drivers ceasing to function

These are the driver scans of 2 of our recent wiki members*

*Scans were performed on computers suffering from A4tech 0k-521 disfunctions.

Scan performed on 2/19/2017, Computer: HP NM943AA-UUW M9570

Outdated or Corrupted drivers:7/23

Device/DriverStatusStatus DescriptionUpdated By Scanner
Intel Controller Enhanced Host USB2 Intel(R) famiglia ICH9 - 293AUp To Date and Functioning
Mice And Touchpads
Microsoft Microsoft USB Wireless Mouse (Mouse and Keyboard Center)Up To Date and Functioning
Synaptics Souris compatible PS/2Up To Date and Functioning
Synaptics Synaptics Composite USB HID DeviceUp To Date and Functioning
Usb Devices
Microsoft Intel(R) 82801DB/DBM USB Universal Host Controller - 24C7Corrupted By A4tech 0k-521
Microsoft Controlador de host universal USB VIA Rev 5 o posteriorCorrupted By A4tech 0k-521
%GENERIC% USB 2.0 card reader DEMO board with ICSI brand name (MaskROM version)Up To Date and Functioning
Sound Cards And Media Devices
Creative Creative SB Audigy 4 (WDM)Outdated
Realtek Audio Device on High Definition Audio BusOutdated
ASUS USB Mass Storage DeviceUp To Date and Functioning
Network Cards
TP-LINK USB2.0 WLANUp To Date and Functioning
Microsoft HID KeyboardUp To Date and Functioning
Hard Disk Controller
VIA Secondary IDE ChannelUp To Date and Functioning
NEC Texas Instruments PCIxx12 Cardbus ControllerCorrupted By A4tech 0k-521
Nokia Nokia 5230 USB Phone ParentUp To Date and Functioning
Microsoft Texas Instruments PCI-7x20/6x20 CardBus ControllerUp To Date and Functioning
Intel(R) 82810 Graphics Controller (Microsoft Corporation)Up To Date and Functioning
Cameras, Webcams And Scanners
Canon CanoScan LiDE 110Outdated
Video Cards
ATI RADEON X600 Series (Microsoft Corporation - WDDM)Corrupted By A4tech 0k-521
Input Devices
Lenovo Lenovo USB Optical Wheel Mouse (HID)Up To Date and Functioning
Port Devices
Huawei Vodafone Mobile Broadband Secondary Port Modem (Huawei) (COM28)Up To Date and Functioning
Sony Digital Flat Panel (1024x768)Up To Date and Functioning
Mobile Phones And Portable Devices
Acer NOKIAUp To Date and Functioning

Scan performed on 2/19/2017, Computer: Acer Aspire M5800

Outdated or Corrupted drivers:7/21

Device/DriverStatusStatus DescriptionUpdated By Scanner
Microsoft High Definition Audio-styrenhetUp To Date and Functioning
Mice And Touchpads
Microsoft HID mouseUp To Date and Functioning
Microsoft Microsoft SideWinder X3 Mouse (IntelliPoint)Up To Date and Functioning
Usb Devices
Sierra Wireless AirCardUp To Date and Functioning
Logitech Logitech USB Camera (IM/Connect)Up To Date and Functioning
Intel(R) 82801FB/FBM SMBus Controller - 266AUp To Date and Functioning
Sound Cards And Media Devices
AMD AMD High Definition Audio DeviceUp To Date and Functioning
AVerMedia AVerMedia H789 PCI-E Hybrid DVB-TUp To Date and Functioning
Network Cards
hspa Modem AlcatelOT Wireless Ethernet AdapterUp To Date and Functioning
Microsoft HID KeyboardOutdated
Hard Disk Controller
Intel(R) ICH8/ICH8R Family LPC Interface Controller - 2810Corrupted By A4tech 0k-521
Intel Intel(r) AIM External Flat Panel Driver 2Outdated
Nokia Nokia E52 USB LCIFOutdated
Garmin Garmin USB GPSUp To Date and Functioning
Western Digital WD SES Device USB DeviceOutdated
Cameras, Webcams And Scanners
Canon CanoScan LiDE 110Corrupted By A4tech 0k-521
Video Cards
NVIDIA NVIDIA GeForce FX 5200Up To Date and Functioning
Input Devices
Lenovo USB DeviceUp To Date and Functioning
Port Devices
MediaTek DA USB VCOM Port (COM11)Corrupted By A4tech 0k-521
Sony Digital Flat Panel (1024x768)Up To Date and Functioning
Mobile Phones And Portable Devices
Acer NOKIAUp To Date and Functioning
Driver ModelOriginal Upload DateLast ModificationDriver FileFile SizeCompatible Computer ModelsAvailabilty To Instalation Manager
A4tech 0k-521 61.12.1079/22/201412/28/2016a4tech_0k-521-61.12.107.exe47kbNEC PC-VY20AED5MFA5, Gateway FX7029E, ASUS G750JW, Sony VGN-SZ1XP, HP RR861AA-ABD, Acer Aspire 1820PTZ, Lenovo ThinkPad R60e, HP P6772l, HP P6604f, MSI VR321, HP Pavilion dv6000, Fujitsu FMVU75HRG, BenQ Joybook T31, HP S5770uk-m, LG R490-K.ARCWE1, HP GB290AA-AB5 m8088hk, MSI MS-7733, Lenovo ThinkPad T530i, and more.
A4tech 0k-521 M60392.112/30/201412/29/2016a4tech_0k-521-m60392.1.exe39kbHP HP Pavilion g7 Notebook PC, HP AY020AA-ABL p6320f, NOVATECH BB-4770C, HP HP Compaq nx9420, HP 23-f390, HP HP Compaq 6730b, Toshiba Satellite C850-B843, Gateway P-6318u HSN, Toshiba SATELLITE C855-1ME, Sony VGN-CS60B_Q, IBYTE UDP GN ANDROS-I60L, IBYTE Udp gn naxos-i1l, Lenovo ThinkPad T430, HP P8315A-ABZ 451, Gateway GT5042j, NEC PC-VY25AAZR7, and more.
A4tech 0k-521 Q21.18899/26/201412/27/2016a4tech_0k-521-q21.1889.exe163kbSony VGN-CR363, Fujitsu ESPRIMO P2521, HP GX609AA-A2L m9160f, HP HP Pavilion dv8000, AT ALSEN, Toshiba Dynabook R822/WT9GS, LG R560-UAPW3E, IBM 2374E80, Fujitsu FMVNFB70BK, AnabelleB Graduate VA20, Sony VGN-NS52JB_P, Compaq PE427A-ABU S7150UK GB420, Acer NC-V5-531-10076G50MASS, Sony SVE15116FJB, Sony VGN-NS31S_S, HP Ps351aa-abs, Sony VPCEB1E1E, IBM 812235U, and more.
A4tech 0k-521 C61.131.102/7/201512/30/2016a4tech_0k-521-c61.131.10.exe153kbIBM 622133G, Samsung 400B4Z/A01TH, Dell Dimension 9100, HP GT690AA-AB4 IQ780d, HP 27-1015ef, Sony VOA, IBM 1847Y1Y, AT ALSEN PROFI 41G, MEI GSeries, HP Presario B1900, and more.
A4tech 0k-521 24071/5/201512/29/2016-2407.exe24kbASUS BA5190,A500, HP GB290AA-AB5 m8088hk, HP HP Compaq 6710s, Lenovo 10245BG, HP S5-1217, NEC PC-VK22EAZHB, Compaq GM442AA-ABA SR5125CL, Fujitsu FMVNFD75B, Gateway FX540B, IBM 621936U, Sony VGN-UX50, Fujitsu Blubb, HP HPE-420f, Dimotion PCDQ3W5, Gericom Phantom, HP FR515AA-AB9 m9470pt, and more.
A4tech 0k-521 Y62201.110/25/201412/28/2016a4tech_0k-521-y62201.1.exe130kbNEC PC-VK25MXZCC, ASUS BP6260, Acer TravelMate 8372, Packard Bell OneTwo L3851, Gigabyte P35-S3G, NEC PC-MK29MLZDF, Panasonic CF-30F3SAXAM, HP VN465AA-UUW HPE-010sc, Toshiba SATELLITE U50-A, NEC PC-VK26TXZNG, Compaq GN666AA-ABM SG3102LA, Gateway H5212, HP HP Compaq dc5100 MT, Lanix Lanix Corp, Fujitsu FMVXN0X81, Lenovo ThinkPad X201, Samsung RV409/RV509/RV709, and more.
A4tech 0k-521 2.1320310/18/201412/29/2016a4tech_0k-521-2.13203.exe114kbECS HDC-I, Toshiba Dynabook T552/36FWK, Compaq GN732AA-ABH SR5135NL, IBM ThinkCentre A51p, Fujitsu ESPRIMO E900 0-Watt, LG GS50-5FH1, Packard Bell Ixtreme i7650, Lenovo 6457W8Q, Sony VGN-NW230G, Fujitsu FMVNFD80N, and more.
A4tech 0k-521 440493/7/201512/30/2016lmzsscy-44049.exe118kbSony VPCSB3AJ, HP HP Compaq 7900, ASUS W3A, HP RX889AAR-ABA a6040, Toshiba SATELLITE PRO C850-19G, Sony VGN-TZ35AN, HP RQ407AAR-ABA a1748x, LG R580-UP87K, MSI MS-7360, NEC VERSAE6300 RNF41103088, LG S1-QP01HS, and more.
A4tech 0k-521 8372.162/26/201512/27/2016a4tech_0k-521-8372.16.exe160kbHP Presario 2100, Fujitsu MS-6318, Fujitsu FMVXDE6K2Z, IBM 8183GNG, NEC PC-LL900BD, Sony VGN-NW235F, Lenovo 8927W1L, LG X200-NS5BK, Sony VGN-TZ36L_B, HP FR564AA-ABF m9356.f, LG 15U530-GT30K, Gateway NV44, Ipex I.T.G GOC Guardfish series, HP RQ480AA-ABZ, Fujitsu FMVNS3EE, and more.
A4tech 0k-521 229799/24/201412/27/2016a-22979.exe192kbHP DT301A-ABM T450M, HP FL308AA-ABD IQ512de, Toshiba TECRA A2, NEC Express5800/TM700, Sony VGN-SR25T_P, HP 810-190jp, IBM 8115KUT, Lenovo ThinkPad T60p, Panasonic CF-51PFDDEBM, HP NY438AA-ABA p6115y, Sony VGN-CR260F, Panasonic FZ-G1AABJB1M, HP RZ412AA-ABZ, Toshiba SATELLITE L850-13U, Compaq DQ193A-ABZ S5300IT IT340, Fujitsu FMVF705BDR, NEC PC-LL900BD, HP HP ENVY17 NOTEBOOK, HP NC699AA-ABJ a6740jp, and more.
A4tech 0k-521 U2.11.170912/11/201412/29/2016a4tech_0k-521-u2.11.1709.exe138kbHP NC214AA-UUW a6730sc, LG LM60-15166L, Fujitsu LIFEBOOK NH532, HP ProLiant BL490c G7, SAMSUN R509, Supermicro X9DR3-F, Sony SVT13136CWS, Packard Bell EasyNote_MX37-U-005, Sony VPCCB2M0E, HP P6-2485eo, and more.
A4tech 0k-521 1.1340810/3/201412/30/2016a4tech_0k-521-1.13408.exe85kbIBYTE UDP GN ANDROS-I60L, IBYTE Udp gn naxos-i1l, Lenovo ThinkPad T430, HP P8315A-ABZ 451, Gateway GT5042j, NEC PC-VY25AAZR7, Lanix LANIX CORP 4130, Fujitsu AMILO Li 2735, Gericom Phantom, Intel WIV68105-0268, Lenovo H520, Acer Aspire X1470, CompUSA PC Work Series, Sony SVE1113M1RW, Pegatron H24L, HP NP189AA-ABA s5160f, IBM 80847CG, IBM 818373G, and more.
A4tech 0k-521 2.11.18491/10/201512/27/2016a4tech_0k-521-2.11.1849.exe98kbAT TRILINE PROFI I48, Fujitsu A6220, Lenovo ThinkPad X200, Fujitsu FMVCE70L9, Sony VGN-NW120D, NEC PC-VL750CS, NEC PC-MA30YMZEB, HP HP Compaq nx7400, HP HP Touchsmart 300-1120, Toshiba Dynabook T552/36HRJ, Sony VGC-RB41P, Toshiba SATALLITE A300, HP DX442AV, Lenovo Lenovo IdeaPad Y485, Itautec Infoway w7730, IBM 2384ATU, and more.
A4tech 0k-521 7397711/11/201412/30/2016a4tech_0k-521-73977.exe53kbSony VGN-CR510D, IBM 8183DGU, Sony VGN-NS92XS, Lenovo ThinkPad X200 Tablet, Transource RoadRunner NB-IH15G, HP FR598AA-ABE IQ512es, Compaq EP103AA-ABU SR1709UK GB610, Pegatron C17B, Acer Aspire 1420P, HP 23-d050xt, and more.
A4tech 0k-521 G5115ch-m, Dell PowerVault NX3100, Sony VGN-TX73B_B, HP Presario V2000, IBM 2724JU1, Gateway Gateway M250, WIPRO WSG37425V-0054, LG R490-KR6WK, NEC PC-VL5907D, NEC PC-LG17FWTGG, Sony VGC-LS30E, Compaq DM174A-ABA S5300NX NA311, IBM 80847CG, LG S530-L.ACR1AD, Packard Bell ENLS44HR, GIADA GIADA, ECS Z77H2-A2X Deluxe, HP P7-1040be, and more.
A4tech 0k-521 1.1399/16/201412/30/2016syycujz-1.139.exe48kbCompaq FK583AA-A2L SR5633WM, Compaq GS367AA-AB4 SR5175CF, IBM 818373G, Packard Bell EASYNOTE_MX52-B-029, NEC PC-VY20AED5MFA5, IBM 2888W5S, IBM System x3200 M3 -[7328AC1, Fujitsu FMVFB70NT, Compal HGL30C, Cybernet Manufacturing DeskBook, Toshiba Dynabook Satellite L45 240E/HD, Toshiba Dynabook MX/33KRD, HP P9921A-ABA 743c, and more.
A4tech 0k-521 E707742/28/201512/29/2016rwbck-e70774.exe115kbSony VPCF13RFX, NEC RND61092195, HP HP Pavilion dv9000, Sony VPCCW15FG, Fujitsu PRIMERGY TX150 S7, Panasonic CF-W4GW9AXP, Sony VGN-SZ13GP_B, Lenovo ThinkPad T430, Sony VPCEB13FG, ASUS PRDLS533, HP Compaq CQ62, NEC PC-MY26XHZE1, Acer Veriton M200-Q57, Fujitsu FMVP773BDW, HP GG625AA-UUW, IBM 8315B1U, TBD K8A8X-M, HP 600-1390, and more.
A4tech 0k-521 1.11.198210/19/201412/28/2016aicqtvc-1.11.1982.exe91kbSony VGN-BX745FN, Compaq VN458AA-UUW CQ5210SC, HP D5468AT-ABA GX768AA, Acer Aspire 5735Z, HP 500-018es, IBM 18669MG, Compaq NC696AA-ABA SR5000, HP EG158AA-ABF m7171.f, IBM 8307GU7, Seneca V63909, Toshiba Dynabook SS LX/190DR, BenQ Joybook P51, NEC PC-LL700BS6R, IBM 9210WLV, Gateway MT6220B, ASUS 1225B, Lenovo ThinkPad T60, HP ES131AA-UUZ, IBM 8141KGR, and more.
A4tech 0k-521 2.1272.122/19/201512/27/2016a4tech_0k-521-2.1272.12.exe190kbDell PowerEdge SC1420, Sweetwater Sound CS250, IBM 187134M, Packard Bell SPIRIT 4054, Sony VGC-JS52JB_S, IBM ThinkPad Z60m, Lenovo 1S1680036940055, Sony VPCZ1290S, Lenovo ThinkPad W700, NEC PC-MJ29MLZ2JCSF, NEC PC-LS150LS1KSG, IBM 811314U, and more.
A4tech 0k-521 8062.1812/27/201412/29/2016kplx-8062.18.exe59kbLG R510-S.AP87K, Packard Bell IMEDIA X1300 AIO, Gateway GT5418E, MAXDATA Fusion 1000 I, Sony VGN-SZ77N_C, Positivo POS-ECIG31BT, HP HP ProBook 4520s, Compaq KT580AA-A2L SR5548F, NEC PC-LL550MG1J, HP P1089A-ABU 7965, Samsung G910, Sony VGN-AW120D, LG P1-JACKE, Sony SVE15129CGB, Sony VGN-FJ90S, Dell Studio 1745, and more.
A4tech 0k-521 2.1041.1012/23/201412/30/2016rngaldlfh-2.1041.10.exe156kbLenovo 20AY001DMD, Gateway S2.WNB03.004, Sony VPCW217AG, HP HPE-420f, IBM 2658MJJ, Acer Veriton 7700GX, HP P6-2155a, HP HP Pavilion TS 10 Notebook PC, Gateway E-155CG, IBM 81838HJ, HP AU917AA-ABL e9270f, Omni OTC-H3222D00, Toshiba SATELLITE C850-16W, Cybernet Manufacturing DeskBook, NEC RND61092195, Fujitsu PRIMERGY TX300 S3, and more.

Please Note: There are particular operating systems known to have problems with A4tech 0k-521:
  • Windows 8 Enterprise
  • Windows XP Media Center Edition
  • Windows Vista Home Premium
  • Windows Vista Business
  • Windows Vista Home Basic
If you encounter problems with the direct download for these operating systems, please consult the driver download manager for the specific A4tech 0k-521 model.
Laptop A4tech 0k-521Tablet A4tech 0k-521Download A4tech 0k-521Upgrade A4tech 0k-521Update A4tech 0k-5212017 A4tech 0k-521Free A4tech 0k-521Data A4tech 0k-521Info A4tech 0k-521Help A4tech 0k-521Guide A4tech 0k-521Comments A4tech 0k-521Windows 10 A4tech 0k-521Vista A4tech 0k-521Windows 7 A4tech 0k-521Install A4tech 0k-521