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12/4/2016 new driver models for direct download:573
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A4tech Nb-57d 5 stars review"The best driver WIKI ever! I wil keep coming back for sure."Eric Smalter, Boston, MA
Supported languages for A4tech Nb-57d
Certifications for A4tech Nb-57d
5 stars for A4tech Nb-57d "WOW! Finally my PC got up to speed!" Melany Kim 7/18/2015

Checking...for 12/4/2016 Updates

All drivers on semantic.gs are updated on daily basis.

However, a new version of A4tech Nb-57d might have been uploaded since our last site update.

A4tech Nb-57d Driver Download

Windows Compatibility for A4tech Nb-57d driver

A4tech Nb-57d Driver Details:

A4tech Nb-57d File Name: a4tech_nb-57d.zip

A4tech Nb-57d Driver Version: 815L/.a

A4tech Nb-57d ZIP Size: 113.kb

Manufacturer: A4tech

A4tech Nb-57d was fully scanned at: 12/2/2016
Scan Status: driver download scanOK

A4tech Nb-57d special revision for: Windows 8 Enterprise 64 bit, Windows XP Tablet PC Edition 64 bit, Windows Vista Home Premium 32 bit, Windows Vista Home Basic 64 bit, Windows XP Media Center Edition 2004 64 bit, Windows XP Home Edition, for home desktops and laptops 32 bit, Windows Vista Enterprise (Microsoft Windows NT 6.0.6000.0) 64 bit, Windows XP 64-bit Edition 64 bit, Windows XP Home Edition N 64 bit, Windows XP Professional x64 Edition 64 bit, Windows 7 Professional 32 bit, Windows 7 Enterprise (Microsoft Windows NT) 64 bit

A4tech Nb-57d Download Stats:

Driver Uploaded: 11/14/2016

Direct Downloads: 395
Most Recent Download: 12/2/2016
Managed Downloads: 2346
Most Recent Download: 12/3/2016
Download Mirrors: 2
Current Delay: 26 Seconds
Driver License: Free to the general public

Direct Download Success Stats:

Reports Issued By 324/395 Users

Success Reported By 62/324 Users

Driver Download Score62/100

Driver Installation Score75/100

Overall preformance Score72/100

A4tech Nb-57d 26 Thumbs Up26Thumbs
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A4tech Nb-57d 7 Thumbs Down7Thumbs
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A4tech Nb-57d 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 2281/2346 Users

Success Reported By 1922/2281 Users

Driver Download Score79/100

Driver Installation Score76/100

Overall preformance Score81/100

A4tech Nb-57d 1887 Thumbs Up1887Thumbs
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A4tech Nb-57d 112 Thumbs Down112Thumbs
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A4tech Nb-57d driver installation manager was reported as very satisfying by a large percentage of our reporters, so it is recommended to download and install.

DOWNLOAD OPTIONS:

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 Nb-57d 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 Nb-57d + all other outdated drivers, and installs them all at once.

Please help us maintain a helpfull driver collection.
After downloading and installing A4tech Nb-57d, or the driver installation manager, take a few minutes to send us a report:
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A4tech Nb-57d 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 Nb-57d disfunctions.

Scan performed on 12/4/2016, Computer: HP HP Pavilion P6654Y

Outdated or Corrupted drivers:5/18

Device/DriverStatusStatus DescriptionUpdated By Scanner
Motherboards
Intel(R) ICH8 Family USB2 Enhanced Host Controller - 283AUp To Date and Functioning
Mice And Touchpads
(Standard mouse types) HID mouseUp To Date and Functioning
Usb Devices
Microsoft Intel(r) 82801BA/BAM USB Universal Host Controller - 2444Up To Date and Functioning
Genesys GenesysLogic USB2.0 PC CameraUp To Date and Functioning
Sound Cards And Media Devices
Hauppauge Hauppauge WinTV HVR-1200 (Model 71xxx, Hybrid DVB-T, No FP)Corrupted By A4tech Nb-57d
AVerMedia Controller video multimedialeUp To Date and Functioning
ESS ESS Maestro2E PCI AudioDrive (WDM)Up To Date and Functioning
Network Cards
ZTE ZTE Mobile Connect Wireless Ethernet AdapterUp To Date and Functioning
Keyboards
Microsoft HID KeyboardUp To Date and Functioning
Hard Disk Controller
Intel Intel(r) 82801DB Ultra ATA Storage Controller-24CAUp To Date and Functioning
Others
Realtek Semiconduct Realtek PCIE CardReaderOutdated
Intel USB-IF USB 3.0 HubUp To Date and Functioning
Cameras, Webcams And Scanners
USB2.0 PC CAMERA Periferica video USBUp To Date and Functioning
Video Cards
VIA/S3G VIA/S3G UniChrome Pro IGPUp To Date and Functioning
Input Devices
Microsoft HID Non-User Input Data Filter (KB 911895)Corrupted By A4tech Nb-57d
Port Devices
ONDA ONDA USB Enumerator For AT DeviceCorrupted By A4tech Nb-57d
Monitors
Sony Digital Flat Panel (1024x768)Up To Date and Functioning
Mobile Phones And Portable Devices
Acer NOKIACorrupted By A4tech Nb-57d

Scan performed on 12/4/2016, Computer: Sony VGN-P92KS

Outdated or Corrupted drivers:5/20

Device/DriverStatusStatus DescriptionUpdated By Scanner
Motherboards
Intel(R) Chipset QuickData Technology device - 3433Up To Date and Functioning
Mice And Touchpads
Logitech Logicool HID-compliant Unifying MouseUp To Date and Functioning
Microsoft Microsoft USB Basic Optical Mouse (IntelliPoint)Corrupted By A4tech Nb-57d
Usb Devices
Microsoft Microsoft Mouse and Keyboard Detection Driver (USB)Up To Date and Functioning
Sound Cards And Media Devices
YUAN High-Tech Development YUAN MC763M/MC763H Hybrid Analog/DVB-TUp To Date and Functioning
Network Cards
Qualcomm Atheros Ethernet-ControllerOutdated
Keyboards
Microsoft HID KeyboardUp To Date and Functioning
Hard Disk Controller
Advanced Micro Devices Controller standard PCI IDEUp To Date and Functioning
Others
UPEK TouchChip Fingerprint CoprocessorOutdated
Intel(R) Graphics Chipset (KCH) DriverUp To Date and Functioning
Realtek Semiconduct Realtek PCIE CardReaderUp To Date and Functioning
Creaform NEC OHCI Compliant IEEE 1394 Host ControllerUp To Date and Functioning
Intel Port racine express PCI Intel(R) 82801FB/FBM PCI -2662Outdated
UPEK TouchChip Fingerprint CoprocessorUp To Date and Functioning
Cameras, Webcams And Scanners
Canon Canon MP160Up To Date and Functioning
Video Cards
VIA/S3G VIA/S3G UniChrome Pro IGPUp To Date and Functioning
Input Devices
Hewlett-Packard HP Link-5 micro dongleUp To Date and Functioning
Port Devices
Sony Ericsson Sony Ericsson 750 USB WMC OBEX Interface (COM6)Up To Date and Functioning
Monitors
Sony Digital Flat Panel (1024x768)Outdated
Mobile Phones And Portable Devices
Acer NOKIAUp To Date and Functioning
Driver ModelOriginal Upload DateLast ModificationDriver FileFile SizeCompatible Computer ModelsAvailabilty To Instalation Manager
A4tech Nb-57d O41.18682/9/201512/27/2015a4tech_nb-57d-o41.1868.exe169kbLG R580-UP75K, IBYTE UDP GN ANDROS-I60L, Sony VPCJ126FJ, Lenovo 20ARA024KR, DTK VistaPro 6250, Compaq NY682AA-AR6 CQ3132L, Compaq FR604AA-ABF SR5529FR, Panasonic CF-19TH187QW, Lenovo 7663V2L, PDS Vector CQ, Samsung N130, Fujitsu FMVNFA55K, Panasonic CF-W7BWHNJR, Epson Endeavor NY3300S, and more.
A4tech Nb-57d 202.1921/28/201512/30/2015utfder-202.192.exe50kbLG B15MS.ASQNBDE, BenQ Joybook T31, Panasonic CF-19LCRDX6B, NEC PC-VY16MRFJAFUX, IBM 2668VMY, Medion P861X, HP RQ407AAR-ABA a1748x, WIPRO WSG48105V-0015, Packard Bell IXtreme X9702, NEC PC-MJ29MLZ2JCSG, HP HP EliteBook 8560w, HP Pavilion dv9000, Toshiba SATELLITE P300-160, Acer TM6595, NEC NEC POWERMATE S2100-006, HP Pavilion dv5 NoteBook PC, and more.
A4tech Nb-57d 1.1782.112/7/201412/29/2015a4tech_nb-57d-1.1782.1.exe195kbHP KY787AA-AKL p6172l, Sony VPCZ130GB, HP GJ474AA-ABA s3100, LG E500-S.AP33T, Sony VGN-FE17SP, Sony VGN-CS190N, HP PS351AA-B1U d1260.se, Lenovo ThinkPad X100e, VIA KM400/A-823x, HP Compaq 615, IBM 622133U, Lenovo ThinkPad X200s, HP Presario V3000, Dell Inspiron M5110, ARCELIK 1PF-ANB 586D1 MT, and more.
A4tech Nb-57d 81.19222/1/201512/27/2015a4tech_nb-57d-81.1922.exe68kbIBM 2672RD3, Sony PCG-K14, CS&S Zenet, Panasonic CF-30KCPRQAM, Dell Vostro 1320, HP FK785AA-A2L s3620f, HP HPE-310pt, IBM IBM System X3100 M4 -[2582Z6H, Sony SVP1322R4RBI, HP EC619AA-ABY a1130.dk, LG E500-S.AP28P, HP PN239AA-ABZ m1180.it, Epson Endeavor NY3300S, Gigabyte GA-E7AUM-DS2H, and more.
A4tech Nb-57d 81.17221/20/201512/28/2015a4tech_nb-57d-81.1722.exe98kbNEC EASYNOTE P910401306, Notebook MIM2290, HP PX530AA-UUZ t3040.ch, Fujitsu FMVXD4VR2Z, Compaq BT466AA-ACJ CQ3211IX, AMD & ATI P030A, Fujitsu FMVNE4BD3, Fujitsu FMVXNN281, Toshiba Dynabook EX/66MWHS, Compaq FQ552AA-ABA SR5616F, HP DT172A-ABZ t328.it, Lenovo ThinkCentre A52, Zoostorm 7010-0276A, IBM System x3200 M3 -[7328AC1, NEC EASYNOTE PB41Q00006, and more.
A4tech Nb-57d 309073/7/201512/27/2015a4tech_nb-57d-30907.exe120kbHP KJ439AA-AB2 g3328cx, Sony VPCEG15FL, Sony VGN-NS11SR_S, Sony VPCEG1S1R, HP ES131AA-UUZ t3415.ch, Sony VPCW12Z1T, Sony VGN-CS62JB_R, MCJ MCJ, HP LX909ES#ABZ, Sony SVE15135CVB, IBM 2366GG4, Packard Bell EasyNote_MX66, NEC EASYNOTE P910R00406, and more.
A4tech Nb-57d A1.1392.1711/11/201412/29/2015a4tech_nb-57d-a1.1392.17.exe74kbIBM 818373G, Packard Bell EasyNote_MX37-U-005, Lenovo 3000 J205 Desktop, Sony SVE15138CGS, NEC PC-VJ22GXNEHTXA, HP HP PRO 6200 MT PC, IBM 26476AG, HP NC684AAR-ABA a6750y, HP S5680es, HP Pavilion zd8000, Compaq PX629AA-ABU SR1429UK GB520, Fujitsu CELSIUS R930, SAMSUN 400B4Z/S01TH, NEC PC-VL570AD, HP 23-b340ef, NEC PC-LF7506D1FL, Fujitsu FMVNE4BD3, Gateway P-6318u HSN, and more.
A4tech Nb-57d 328672/9/201512/27/2015a4tech_nb-57d-32867.exe174kbHP AV890AV-ABJ e9280jp, MIKROLOG Power P45-CO, Panasonic FZ-G1AAHJB1M, HP PS282AA-ABZ m1280.it, HP KZ631AAR-ABA IQ505, Fujitsu D2364-A3, Acer Veriton 5800FX, HP P8264A-ABF 761, IBM 48007X3, Toshiba Satellite X505, Toshiba Dynabook T350/34BCS, and more.
A4tech Nb-57d R31.19212/25/201412/27/2015a4tech_nb-57d-r31.192.exe120kbFujitsu PRIMERGY TX150, HP S5-1445b, NEC PC-MJ29MLZZ1BSG, HP DT172A-ABZ t328.it, Sony SVF15215SNB, Acer Aspire 5672, Fujitsu FMVMGG70WY, Sony VGN-NS21X_S, Lenovo 6458Y6X, Dell PowerEdge R410, Gateway TC73, HP FK935AA-ABG IQ515a, Sony PCG-K35, and more.
A4tech Nb-57d P1.189911/9/201412/29/2015a4tech_nb-57d-p1.1899.exe57kbSony VGN-TZ92S, Lenovo 20ARA024KR, Sony SVE1413WPNB, Sharp PC-MM Series, Sony VPCEB15FA, IBM IBM eServer x3105 -[434722G, NEC NEC POWERMATE S2100-006, Toshiba NB 200-134, ASUS 1008HA, Fujitsu D2312-C1, Toshiba Dynabook EX/2513CDSTB, Sony VGN-FJ90S, Sony VGN-BX745FN, Dell PowerVault NX3100, Intel SJR2A092, NEC PC-VJ12EBBCHCLD, HP P6374A-ABG 720a, NEC PC-VN470GS6R, Sony PCG-FX33S_BP, and more.
A4tech Nb-57d 1.104693/7/201512/30/2015a4tech_nb-57d-1.10469.exe127kbSony VGN-FW170D, NEC EASYNOTE PB47S00286, Lenovo ThinkPad T530i, ECS BAT-MINI, IBM 8303MJ8, Gateway Gateway M250, Sony VGN-TZ31XN_B, HP KJ415AA-AB4 m9290d, Packard Bell IMedia 8002 EU, HP H8-1232, Lenovo 6463WWF, IBM IBM System x3400 M2 Server -[783734G, HP PE525A-ABS a509.se, LIGHTEDGE 965GFEKR, Sony VPCL22AJ, Medion S2211, , Lenovo 7360-D3U, and more.
A4tech Nb-57d 41.16462/7/201512/27/2015a4tech_nb-57d-41.1646.exe197kbHP HP EliteBook 8560w, HP Pavilion dv9000, Toshiba SATELLITE P300-160, Acer TM6595, NEC NEC POWERMATE S2100-006, HP Pavilion dv5 NoteBook PC, Compaq Presario 7110US 470016-083, Toshiba SATELLITE C870D-10D, Lenovo ThinkPad X61, NEC PC-BL550DS6W, Sony VPCF13QFX, Sony VGN-NS328J, Panasonic CF-19LCRDX6B, and more.
A4tech Nb-57d 82282.112/13/201412/28/2015a4tech_nb-57d-82282.1.exe198kbToshiba PORTEGE A600, Panasonic FZ-G1AABJKMY, HP HP HDX 16, Sony VGN-FW160AE, Sony VGN-NS305D, Compaq KJ172AA-AB4 SR5272CF, HASEE QJC4, Lenovo ThinkPad T400s, GETAC V100-X, Sony VGN-NS38M_S, HP HP Compaq nc6120, IBM 6221PGG, Packard Bell ISTART 2234, and more.
A4tech Nb-57d W8072711/14/201412/27/2015a4tech_nb-57d-w80727.exe195kbNEC PC-VY16AEDERFW1, Sony VGN-TZ71B, Compaq FZ090AA-ABF SR5605FR, Lenovo 1066E5G, Panasonic CF-SX1WEVHR, IBM 682466A, Lenovo ThinkCentre M90z, Acer Aspire 8730G, IBM ThinkPad T41, Fujitsu FMVA42EWB, IBM IBM System x3400 M2 Server -[7837K9G, and more.
A4tech Nb-57d 1.11.176710/31/201412/28/2015xh-1.11.1767.exe64kbHP NC214AA-UUW a6730sc, Fujitsu N6220, ECS M830, Sony VGN-FW160D, HP Presario R4100, NEC PC-LG17FWTGG, Lenovo ThinkCentre A63, Infoquest QuestPC, Fujitsu Amilo M1439 Series, Dell Dell System Inspiron M4110, Gigabyte MSH61PI-EX, Lenovo ThinkPad SL300, Toshiba SATELLITE PRO C870-1C4, and more.
A4tech Nb-57d 81.12.1389/21/201412/27/2015a4tech_nb-57d-81.12.138.exe48kbLenovo SS09355260, Panasonic CF-F8GWE08N3, Toshiba SATELLITE C855-27U, HP PY198AV-ABA m7360y, Sony VGN-FW190CU, HP Pavilion zd8000, Packard Bell IXTREME I7202, Sony VGN-SZ1XP, Gateway 6020GZ, Compaq DA309A-B14 6540. BE910, HP Envy 15 Notebook PC, Lenovo ThinkCentre A58e, LIGHTEDGE 965LTCK, and more.
A4tech Nb-57d 1.18082/2/201512/30/2015a4tech_nb-57d-1.1808.exe45kbHP CQ2900EC, Toshiba Dynabook Qosmio G10/390LS, Seneca Pro70198, Panasonic CF-19HH165NW, HP DA322A-ABZ 434, NEC VERSAE3100 NN780248559, Acer Aspire 4925, Toshiba Dynabook R634/L, LG RD410-L.ADA3E2, LG X110-L.A7A2E2, LG F1-2242HS, ECS PT880PRO-A, and more.
A4tech Nb-57d 1.132.10212/15/201412/28/2015a4tech_nb-57d-1.132.102.exe119kbHP HP Compaq nc6400, HP EC651AA-ABY t3170.dk, Sony PCV-RZ211, WIPRO WIV37455-0067, Packard Bell EasyNote_MT85-T-001PT, Dell Vostro 1540, HP PX635AA-ABU t3040.uk, Packard Bell IMEDIA D9351 AIO, Lenovo ThinkCentre Edge 71, Packard Bell IMEDIA 6430, HP GX606AA-UUW a6234.sc, Sony VGN-FW54E, NEC PC-MJ25XRZEE, Lenovo 3626A22, Dell Inspiron N4050, Panasonic CF-52AJCBDBM, IBM IBM eServer m Mem-[7976KJG, and more.
A4tech Nb-57d A802.11.12.111/4/201412/30/2015a4tech_nb-57d-a802.11.12.1.exe178kbSony VGN-AS34B, HP ER183AA-ABZ m7395.it, HP G5350nl, NEC PC-VK25MXZCC, IBM ThinkPad Z60t, IBM 6218Z1H, HP HP d330 uT, Gateway MX8734, Sony VPCEL15EN, Fujitsu D3061-A1, Packard Bell PBIPGX, HP D7217M-ABA 533, HP HP Pavilion dv9500, Toshiba Dynabook EX/2513CDSTB, MSI MS-7183, Sony VPCEB1S8E, LG R490-KR7WK, and more.
A4tech Nb-57d D1.11.136210/24/201412/29/2015a4tech_nb-57d-d1.11.1362.exe156kbHP P6-2485eo, Toshiba SATELLITE L850D-130, HP HP Compaq nx6115, Fujitsu FMVLRD7N24, Compaq EC537AA-ABZ SR1549IT IT530, Medion P6611, IBM 2668WGY, Fujitsu FMVCE35E5, Packard Bell IMedia D3235, NEC RND51078695, Sony SVE15127CDS, IBM 2645CBH, and more.
A4tech Nb-57d 220041/11/201512/27/2015a4tech_nb-57d-22004.exe185kbPackard Bell ISTART B4005, IBM 6221RYU, Foxconn Inferno Katana GTI, Gigabyte M1022, HP 700-014eg, Fujitsu FMVNP2HT3A, IBM 2366GG4, IBM ThinkPad T30, Lenovo IdeaPad S10-3s, NEC PC-VJ26MLZCB, and more.
A4tech Nb-57d K409238/31/201412/28/2015hzmc-k40923.exe73kbIBM 622133U, Lenovo ThinkPad X200s, HP Presario V3000, Dell Inspiron M5110, ARCELIK 1PF-ANB 586D1 MT, NEC PC-VX500BD, ECS HDC-I, NEC PC-VY16MEXJRFHX, Dell OptiPlex G1 350Mbr+, Lenovo ThinkCentre M70e, and more.
A4tech Nb-57d D629721/21/201512/27/2015a4tech_nb-57d-d62972.exe188kbSony VGN-SR28_Q, ASUS G750JX, HP HP MINI DM1-2010SO, Sony SVE1511AGJB, HP KT536AA-ABJ IQ507jp, CS&S Zenet, HP HP EliteBook 6930p Notebook PC, IBM 2647A5G, LG V960-UH50K, Sony VGN-CS160F, HP Compaq Presario Notebook PC, and more.
A4tech Nb-57d 239632/3/201512/30/2015a4tech_nb-57d-23963.exe71kbHP DK320A-ABA A206X, HP PX635AA-ABU t3040.uk, IBM System x3200 M3 -[7328Z6S, ECS Z77H2-A2X Deluxe, IBM IBM System x3400 M3 Server -[7379K3G, Lenovo ThinkPad Helix, Lenovo ThinkCentre A63, NEC PC-VL750CS, HP HP MINI DM1-2010SO, HP KY731AA-AKL a6784l, Acer TM6495T, HP G5317de, HP NC829AAR-ABA a6857c, and more.
A4tech Nb-57d W1.13939/16/201412/27/2015a4tech_nb-57d-w1.1393.exe190kbHP GX609AA-A2L m9160f, NEC PC-MY18XEZ77, HP Pavilion dv5 NoteBook PC, ECS H57H-MUS, Acer TravelMate 8571, Toshiba Dynabook T350/34BCS, Medion S2211, Prosys P5P800, Panasonic CF-N9LWRJDS, HP PN065AA-ABA Z540, MSI MS-7327, Gateway 0AAVWP08, Sony SVE15116FJB, HP Compaq Mozart CQ50-112eo, HP HP Compaq nx6110, and more.
A4tech Nb-57d 41.133312/8/201412/28/2015a4tech_nb-57d-41.1333.exe101kbToshiba Satellite C55-A5387, Buympc MPC365, Sony VGC-JS53FB_P, IBM 8427CDU, IBM Eserver xSeries 335 -[8676LSX, Gateway P-7805g, Sony SVE15138CGS, IBM 817231G, Panasonic CF-T1RCAXR, Dell XPS A2020, HP KT394AA-AB4 S3580D, Dell Inspiron 580, Sony VPCSA4AJ, Panasonic CF-29LWQCZBM, Gateway DX4710-UB801A, Sony 9906733-3100574, Lenovo ThinkPad X60, Dell OptiPlex GX1 600L, and more.
A4tech Nb-57d 7066312/8/201412/28/2015a4tech_nb-57d-70663.exe100kbSony VPCZ11A7R, NEC PC-BL550DS6W, Sony VGN-G11XRN_B, THEIS TH-C346/945GZME-RH/512/80/Midi-Towe, HP GB342AA-AB0 a6086tw, Compaq PX697AA-ABZ SR1419IT IT520, HP M7640n-ABA m7640, Leading Edge LECC2600, Packard Bell IMEDIA J4715 AIO, Sony VGC-JS53FB_P, Compaq 5411EA 470029-828, Lenovo ThinkPad SL500c, IBM 8307KSU, Packard Bell IPower X9274, Sony VGNFW490JFT, Fujitsu FMVXD0AH2Z, and more.
A4tech Nb-57d 22.12.131/22/201512/27/2015a4tech_nb-57d-22.12.13.exe153kbHP HP compaq nx4820, Sony VGN-FE21B, HP H9-1386, Motion J3400, Sony VGN-NS130AE, Acer TravelMate 2460, WIPRO WSG37455V-0397, Sony VGN-UX90PS, Lenovo ThinkCentre M91p, LG LW20-13DT, Fujitsu FMVXD0AH2Z, and more.


Please Note: There are particular operating systems known to have problems with A4tech Nb-57d:
  • Windows 7 Ultimate
  • Windows XP Home Edition N
  • Windows XP 64-bit Edition
If you encounter problems with the direct download for these operating systems, please consult the driver download manager for the specific A4tech Nb-57d model.
Laptop A4tech Nb-57dTablet A4tech Nb-57dDownload A4tech Nb-57dUpgrade A4tech Nb-57dUpdate A4tech Nb-57d2016 A4tech Nb-57dFree A4tech Nb-57dData A4tech Nb-57dInfo A4tech Nb-57dHelp A4tech Nb-57dGuide A4tech Nb-57dComments A4tech Nb-57dWindows 10 A4tech Nb-57dVista A4tech Nb-57dWindows 7 A4tech Nb-57dInstall A4tech Nb-57d