1/20/2017 new driver models for direct download:661
A4tech Nb-57 5 stars review"The best driver WIKI ever! I wil keep coming back for sure."Eric Smalter, Boston, MA
Supported languages for A4tech Nb-57
Certifications for A4tech Nb-57
5 stars for A4tech Nb-57 "WOW! Finally my PC got up to speed!" Melany Kim 7/18/2015

Checking...for 1/20/2017 Updates

All drivers on are updated on daily basis.

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

A4tech Nb-57 Driver Download

Windows Compatibility for A4tech Nb-57 driver

A4tech Nb-57 Driver Details:

A4tech Nb-57 File Name:

A4tech Nb-57 Driver Version: 213j8

A4tech Nb-57 ZIP Size: 110.kb

Manufacturer: A4tech

A4tech Nb-57 was fully scanned at: 1/18/2017
Scan Status: driver download scanOK

A4tech Nb-57 special revision for: Windows 8 Pro 64 bit, Windows XP Tablet PC Edition 32 bit, Windows 7 Ultimate 64 bit, Windows XP Starter Edition 64 bit, Windows Vista Starter 32 bit, Windows 10 64 bit, Windows 7 Starter 64 bit, Windows XP Media Center Edition 64 bit

A4tech Nb-57 Download Stats:

Driver Uploaded: 11/14/2016

Direct Downloads: 1036
Most Recent Download: 1/18/2017
Managed Downloads: 5163
Most Recent Download: 1/18/2017
Download Mirrors: 5
Current Delay: 13 Seconds
Driver License: General Public License

Direct Download Success Stats:

Reports Issued By 938/1036 Users

Success Reported By 154/938 Users

Driver Download Score66/100

Driver Installation Score69/100

Overall preformance Score66/100

A4tech Nb-57 43 Thumbs Up43Thumbs
A4tech Nb-57 10 Thumbs Down10Thumbs
A4tech Nb-57 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 5074/5163 Users

Success Reported By 4521/5074 Users

Driver Download Score89/100

Driver Installation Score77/100

Overall preformance Score94/100

A4tech Nb-57 4300 Thumbs Up4300Thumbs
A4tech Nb-57 428 Thumbs Down428Thumbs
A4tech Nb-57 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 Nb-57 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-57 + all other outdated drivers, and installs them all at once.

Please help us maintain a helpfull driver collection.
After downloading and installing A4tech Nb-57, or the driver installation manager, take a few minutes to send us a report:
* Only registered users can upload a report.

Don’t have a password?
Please register, and get one.

A4tech Nb-57 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-57 disfunctions.

Scan performed on 1/20/2017, Computer: EMachines ET1331G-07w

Outdated or Corrupted drivers:5/16

Device/DriverStatusStatus DescriptionUpdated By Scanner
Intel Monitor de rendimiento de agente principal de la familia de procesadores Intel(R) Xeon(R) E5/Core i7 - 3C46Corrupted By A4tech Nb-57
Mice And Touchpads
Microsoft Microsoft USB Basic Optical Mouse (IntelliPoint)Up To Date and Functioning
Usb Devices
Hewlett-Packard Deskjet 3000 J310 seriesUp To Date and Functioning
Sound Cards And Media Devices
Logitech Webcam C170Up To Date and Functioning
Lifeview FlyDVB-T Hybrid miniCorrupted By A4tech Nb-57
Network Cards
Ralink ASUS USB-N53 802.11a/b/g/n Network AdapterUp To Date and Functioning
Microsoft HID KeyboardUp To Date and Functioning
Hard Disk Controller
VIA VIA ATA ChannelUp To Date and Functioning
Texas Instruments Texas Instruments PCIxx12 Integrated FlashMedia ControllerUp To Date and Functioning
Broadcom ThinkPad Bluetooth 4.0Corrupted By A4tech Nb-57
Cameras, Webcams And Scanners
Realtek Realtek USB2.0 PC CameraUp To Date and Functioning
Video Cards
VIA/S3G VIA/S3G UniChrome Pro IGPOutdated
Input Devices
Lenovo ThinkPad USB Travel Mouse (HID)Outdated
Port Devices
Mobile Connector Device Application Interface (COM12)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 1/20/2017, Computer: Sony SVF14N13CLS

Outdated or Corrupted drivers:4/18

Device/DriverStatusStatus DescriptionUpdated By Scanner
VMware VMware VMCI Bus DeviceUp To Date and Functioning
Mice And Touchpads
Microsoft Microsoft Comfort Mouse 3000 (Mouse and Keyboard Center)Corrupted By A4tech Nb-57
Logicool HID-compliant mouseCorrupted By A4tech Nb-57
Microsoft HID mouseUp To Date and Functioning
Usb Devices
Edimax MFP Server Enhanced ControllerCorrupted By A4tech Nb-57
Sound Cards And Media Devices
Advanced Micro Devices AMD Radeon(TM) HD 6520GUp To Date and Functioning
AMD AMD SATA ControllerUp To Date and Functioning
Network Cards
Ralink Langaton 802.11n PCI Express Card LAN -sovitinUp To Date and Functioning
Microsoft Keyboard Device FilterCorrupted By A4tech Nb-57
Hard Disk Controller
Intel(R) ICH8 SATA AHCI Controller - 2824Up To Date and Functioning
Texas Instruments Texas Instruments PCIxx21 Integrated FlashMedia ControllerUp To Date and Functioning
Intel Port racine express PCI Intel(R) 82801FB/FBM PCI - 2660Up To Date and Functioning
Cameras, Webcams And Scanners
Canon Canon MP495 serUp To Date and Functioning
Video Cards
Intel(R) HD GraphicsUp To Date and Functioning
Input Devices
Logitech HID-compliant consumer control deviceUp To Date and Functioning
Port Devices
PROLiNK PROLiNK Voice Device (COM9)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
Driver ModelOriginal Upload DateLast ModificationDriver FileFile SizeCompatible Computer ModelsAvailabilty To Instalation Manager
A4tech Nb-57 837621/25/201512/30/2016a4tech_nb-57-83762.exe211kbIBM 187134M, Toshiba Dynabook T553/37JWB, HP H9-1386, Packard Bell IPower X9110, ASUS BM5275, HP HP Compaq nc6000, HP HP 510 Notebook PC, LG A540-D, HP KE485AA-UUZ, LG LE50-23SK, Lenovo ThinkPad T510i, HP 100-5158, Transource Computer Systems, NEC Express5800/56Xe [N8000-672, and more.
A4tech Nb-57 331.1643/2/201512/27/2016a4tech_nb-57-331.164.exe217kbSony VGN-SZ7RMN_B, Sony SVE1413APXB, Compaq PX697AA-ABZ SR1419IT IT520, Dell PowerEdge 4600, Fujitsu STYLISTIC Q572, GETAC V100-X, HP HP Compaq 2510p, LG R380-A.APC4BA3, Sony VGN-NW20EF_W, IBM 1832BG1, IBM 6221MFG, Sony VGN-NS31MT_S, NEC PC-LS150LS1KSG, HP PL497AA-UUZ, IBM 1834RUG, Panasonic CF-30F3SAXAM, Lenovo ThinkPad X60s, and more.
A4tech Nb-57 402702/17/201512/28/2016a4tech_nb-57-40270.exe160kbHP D5468AT-A2L a123l, Packard Bell ISTART 2234, IBM 2373K53, Sony VGN-C140FP, Lenovo ThinkCentre Edge 71, NEC PC-MK33LLZZUFJF, Fujitsu ESPRIMO E900 0-Watt, Compaq Evo N620c, Gateway MX8734, Panasonic CF-S9JYKADP, Fujitsu LifeBook T5010, Lenovo ThinkPad W530, HP 23-f390, HP 20-a218d, Gateway GT4228m, HP NQ867AA-UUZ m9650ch, and more.
A4tech Nb-57 60681.12/10/201512/28/2016a4tech_nb-57-60681.1.exe114kbSony SVE15136CNS, ODM V10IL, Compaq GT701AA-ACJ SR5250IL, Akerstroms Tx700, Toshiba SATELLITE C855-1NF, HP ProLiant DL360 G5, Sony VPCEB13FG, Gateway NV59C, HP GX592AA-UUZ, HP HP Compaq 6531s, and more.
A4tech Nb-57 S326299/16/201412/28/2016a4tech_nb-57-s32629.exe97kbASUS 1225B, Toshiba Dynabook EX/35LWH, HP ED713AA-ABF w5155.f, HP EJ218AA-B14, AMD & ATI ATI RC410MD-SB460, IBM 8099KKB, Fujitsu PRIMERGY TX150, Lenovo 9349W1R, Toshiba Dynabook Satellite T42 240E/5W, LG R590-XR7WK, NOVATECH MBB-44308D, Sony VGN-TZ15AN, NEC PC-MJ29MLZ2JCSG, Panasonic CF-W2EC1AXS, Lenovo ThinkCentre M90z, IBM 2373ZTS, Advent DT2, Gateway P-7803h, GETAC P470, and more.
A4tech Nb-57 21.18610/2/201412/28/2016a4tech_nb-57-21.186.exe137kbHP FL447AA-ACB a6641ru, Lenovo ChiefRiver Platform, HP P9867A-ABM 743M, Intel Edusmart P-168, LG R200-D.CPF1A9, Sony PCG-U101, Compaq Presario 734RSH US 470038-608, Samsung 900X3F, LG R410-L.A2BME8, Packard Bell IMEDIA MC 8236, Sony SVL2412Z1EB, NEC KV2, Panasonic CF-19FHLAXAM, HP Pavilion dv6000, and more.
A4tech Nb-57 332.182.11/21/201512/29/2016a4tech_nb-57-332.182.1.exe29kbFujitsu FMVNS2TLR, HP KZ692AA-ABU m9373.UK, Sony SVF14N15CLB, Compal HGL30C, Lenovo MT-M5536-A82, Sony SVE15135CVB, Packard Bell IMEDIA MCE 8010, Panasonic CF-30KTP48NL, Dell Dell System Inspiron M4110, Toshiba SATELLITE PRO C850-19G, Lenovo ThinkPad T410s, Packard Bell IMEDIA H5689, HP KA856AA-ABF a6314.f, HP 520-1070uk, Fujitsu FMVLX60W, and more.
A4tech Nb-57 431.1841/5/201512/27/2016a4tech_nb-57-431.184.exe104kbHP Hp workstation xw6000, Sony VGX-TP1DTV, AT PREMIO BINGO, Sony VGN-TZ35AN, NEC PC-VY13MRFEAEHU, Fujitsu FMVWMS157T, Sony VGN-AW41XH_Q, HP G5310be-m, ASUS G750JW, Lenovo 3000 J205 Desktop, HP RJ788AA-ABA a1613w, HP KY660AA-ABJ p6170jp, HP HP Pavilion dv5, Gateway P-6318u HSN, HP PW774AA-ABE, HP AY020AA-ABL p6320f, Sony VPCCW2AFJ, and more.
A4tech Nb-57 71.1702.110/14/201412/30/2016a4tech_nb-57-71.1702.1.exe105kbLG R490-G.AAH1RE2, Sony SVE1412ECXP, Sony VPCEH18FK, IBM ThinkPad Z60m, ARLT Computer Produkte Mr. Gamer 7-11 R2, Fujitsu D3161-B1, Acer Aspire 1420P, HP H9-1390ef, NEC PC-LL550MG1J, MSI MS-9179, HP NC829AAR-ABA a6857c, Sony VGN-G21XP_B, HP G5115ch-m, Cybernet Manufacturing DeskBook, and more.
A4tech Nb-57 3376912/13/201412/27/2016qxbhthq-33769.exe22kbLG R580-U.APD1WT, HP RR455AA-ABF t3727.f, Lenovo ThinkPad X130e, IBM 48007X3, LG LS75-26SLCE1, LG P100-S.AB09E, Gateway NS40T, Fujitsu FMVNP2PL, Toshiba SATELLITE L850-1J9, IBM 217163G, ASUS ET2400IGTS-H61, Fujitsu FMVNXA90N, NEC PC-LL350DD1KS, and more.
A4tech Nb-57 329292/9/201512/29/2016a4tech_nb-57-32929.exe62kbHP 20-a218d, Samsung SM50S, SAMSUN 200B4Z/S01TH, HP Pavilion ZV6100, Sony SVE15136CNS, Acer AM1620/VeritonM262, IBM 2374SU9, Sony PCV-HS80B, Gateway 0AAVWP08, Creative AIO1900 Series, Packard Bell IMEDIA B2501 BE, ASUS G750JW, Fujitsu CLW8GAG1D, HP EG601AA-AB1 a1212k, Lenovo ThinkPad Edge E130, and more.
A4tech Nb-57 2302.11.111/16/201412/28/2016a4tech_nb-57-2302.11.1.exe193kbIBM 6221MFG, Sony VGN-NS31MT_S, NEC PC-LS150LS1KSG, HP PL497AA-UUZ, IBM 1834RUG, Panasonic CF-30F3SAXAM, Lenovo ThinkPad X60s, LG LS50-A514ZL, NEC FC-S16W, Compaq AU852AA-ABM CQ5216LA, Fujitsu LIFEBOOK U574, Packard Bell ISTART C5410 AIO, HP KZ848AAR-ABA a6510t, HP WC785AA-UUW p6363sc, EMachines ET1331G-07w, NEC PC-VL570AD, and more.
A4tech Nb-57 4301.161/7/201512/30/2016a4tech_nb-57-4301.16.exe86kbHP CQ2800EEm, ZEPTO Znote 6515WD, Gateway NX200X, NEC PC-LL700ED, Lenovo 10AJ0002GE, HP FJ440AA-UUW, Compaq Evo N620c, HP EG211AA-ABG m7288a, Acer Veriton Z290G, HP HP Compaq 6515b, Panasonic CF-S9LWGJDS, Sony VGN-FJ21B_R, and more.
A4tech Nb-57 F41.162.172/18/201512/28/2016a4tech_nb-57-f41.162.17.exe118kbToshiba Dynabook T642/T8HB, LG B75PS.AS5MB1D, Toshiba Dynabook SS LX/190DR, Fujitsu FMVNS1E3, Packard Bell EasyNote_MX36-U-051, Epson Endeavor MT8800, Seneca Pro64601, HP HP dx2700 MT, Sony VGN-FW45MJ_B, Compaq Evo N610c, LG P1-5005P, HP P6680pt, Sony PCG-GRZ615M, and more.
A4tech Nb-57 403768/22/201412/29/2016a4tech_nb-57-40376.exe106kbGigabyte M912, LG E500-S.AP28P, NCR 7403-1010-8801, Packard Bell PACKARD BELL IMAX X7300 SP, Fujitsu FMVF53BDWS, Sony SVF15N1B4E, LG R580-U.ARC2BT, Compaq DA309A-B14 6540. BE910, Gateway 710 2900330, Gateway GT5226j, HP PS347AA-B1U, Compaq Presario 7110US 470016-083, Lenovo 00P3799, NEC POWERMATE RD391161295, NEC EASYNOTE PB41Q00006, Samsung 550P5C, Panasonic CF-52RE401QW, and more.
A4tech Nb-57 740032/18/201512/27/2016nmidrvvy-74003.exe112kbFujitsu FMVU90LB, HP GS210AA-ABV dx2290MT, NEC PC-MY28AAZ75, HP HP 530 Notebook PC, LG RB380-A.AFLGL, Zoostorm 7876-0310B, IBM System x3200 M3 -[7328EBG, HP FK522AAR-ABA a6544f, Fujitsu FMVNS1E3, NEC PC-VY20MAZ79, TAROX Business 5000BM, Sony VGN-NW265F, MSI MS-9179, Toshiba SATELLITE C850-A817, Gateway GM5632E, IBM PHILIPS, NEC PC-LL850SG, Sony PCG-GRT170, HP HP Compaq nc6400, and more.
A4tech Nb-57 A7261.133/3/201512/28/2016a4tech_nb-57-a7261.13.exe38kbHP VN470AA-UUZ m9837ch, HP FK908AA-ABG a6640a, Toshiba Dynabook T554/45KR, Sony VGN-SZ17SP_C, LG RD510-L.ADV3E8, Sony VPCEB36FG, HP Pavilion G60-418CA, IBM Eserver xSeries 235 -[8671KAX, NEC PC-VY13MRFEAEHU, Acer Aspire 1825PT, HP VT626AA-AB1 HPE-170k, Gateway T-1629, Lenovo ThinkCentre Edge 72, and more.
A4tech Nb-57 1.1043410/28/201412/27/2016mcqrlrg-1.10434.exe204kbAcer AcerPower 8000, HP HP Compaq dx6100 MT, Toshiba Dynabook NX/76JBL, LG N550-PE50K, Panasonic CF-C1BEAADR, Lenovo 20B6CTO1WW, NEC VERSAP550 NN680209359, Clevo W240BL_W250BZ_W270BZQ, LG P1-J433R1, Zenith Z-Book, and more.
A4tech Nb-57 3071.1611/4/201412/27/2016etjb-3071.16.exe203kbFujitsu FMVH70K9V, HP KN476AA-ACB, Lenovo ThinkCentre M72e, HP HPE-310t, Acer AX12300-U1801A, MIKROLOG Power P45-CO, HP 3600, Sony SVL2412Z1EB, HP Pavilion ZV6100, Toshiba Dynabook T554/45KR, and more.
A4tech Nb-57 Y2.1202.1410/1/201412/28/2016zuh-y2.1202.14.exe81kbSony SVE1412ECXP, Matsonic MS9387E, Lenovo 7659WH9, Compaq GC668AAR-ABA SR5110NX, HP HP nx9000, HP P1017A-ABE 7945, Panasonic CF-19TH187QW, HP KE485AA-UUZ, Lenovo 23242F3, Toshiba NB100, HP Presario 2500, ADVANC Modelo_A, IBM 813135U, Toshiba Satellite L850-B750, LG R500-U.CPCIT, Lenovo ThinkPad X200 Tablet, HP HP Pavilion dv9000, and more.
A4tech Nb-57 702399/28/201412/30/2016a4tech_nb-57-70239.exe112kbExtracomputer D3128-B2, Panasonic CF-19FHLAXAM, Dimotion PCDBS09P, HP P6740ch-m, Toshiba SATELLITE C870-12E, Sony VPCZ130GB, HP Pavilion zx5000, CdcPointSpa CX-7592, HP G5115ch-m, Panasonic CF-18KDHNBVA, Olidata IPMSB/H61, Panasonic CF-53AACZYFT, LG X200-NS5BK, Sony Vgn-sz483, Sony VGN-A317S, and more.
A4tech Nb-57 6206212/15/201412/29/2016a4tech_nb-57-62062.exe30kbFujitsu LifeBook T5010, Lenovo ThinkPad W530, HP 23-f390, HP 20-a218d, Gateway GT4228m, HP NQ867AA-UUZ m9650ch, Packard Bell IMedia D3235, Epson PPVME220, NEC PC-VY25AAZR7, MCJ MCJ, HP HP Compaq nc4200, IBM IBM eServer 206m -[848510U, Compaq GT701AA-ACJ SR5250IL, Sony VPCEB48FJ, Sony VGN-AW25GJ_H, Lenovo 7358W17, CdcPointSpa CX-7592, Medion P7618, Dell Studio 1457, and more.
A4tech Nb-57 2061.110/7/201412/28/2016a4tech_nb-57-2061.1.exe200kbIBM IBM eServer 206m -[848510U, HP Pavilion ZV6000, SAMSUN R710, HP P9879A-ABG 713a, LG S1-MOM1E2, Sony VGN-NS10L_S, Toshiba Dynabook TX/66GPKJ, HASEE QJC4, AT ALSEN, HP WC702AA-UUG HPE-130be, Sony VGN-NS31S_S, LG A510-U.AESGE2, Fujitsu FMVS54DBY, Fujitsu FMVFB70NT, HP HP Compaq nw8000, and more.
A4tech Nb-57 E2.102221/16/201512/28/2016a4tech_nb-57-e2.10222.exe42kbEpson Endeavor MT8800, IBM ThinkCentre A52, HP FT959AA-ABG a6720a, Toshiba Equium L100, IBM 81412EG, Seneca Pro329919, LG B70PS.AR38B3E, HP HPE-350es, Sony VGN-SZ15LP_B, IBYTE Udp gn naxos-i1l, Leading Edge LECQ42SOHO, and more.
A4tech Nb-57 236669/14/201412/30/2016a4tech_nb-57-23666.exe190kbCompaq EG735AA-ABH SR1560NL NL530, Toshiba EQUIUM S6200, IBM System x3200 M3 -[7327Z29, Samsung G910, Lenovo ThinkCentre E51, Mitsubishi AL12FBHEZ42W, MSI MS-7521, Sony PCV-RX407, Seneca Pro354493, Acer Veriton M-480G, Sony VPCEB13FG, Gigabyte 7GEWH, ICP/iEi B216, HP Compaq CQ62, HP P6-2007nl, Packard Bell IMEDIA H5190, and more.
A4tech Nb-57 F2.121.1248/26/201412/28/2016a4tech_nb-57-f2.121.124.exe36kbIntel D965MTW, Foxconn Inferno Katana GTI, NEC VERSAE6300 RNF41103088, Lanix LANIX TITAN 3050 VER3, M&A E10IS, HP A1412n-aba a1000, Gigabyte MSH61PI-EX, Dell Vostro 1320, PCWARE IPMQ45, IBM 2668W13, and more.
A4tech Nb-57 702.12.149/2/201412/28/2016ovjxnoao-702.12.14.exe100kbIBM 8142LU2, Sony VGN-TZ240N, Lenovo ThinkPad T510, Compaq EP103AA-ABU SR1709UK GB610, Toshiba Satellite C850-F0202, Lenovo 7373WG6, Gateway TC73, Lanix LANIX CORP 4030, Gateway M-152S, IBM Razo, Sony VPCEB19GX, Lenovo 7659V26, IBM 8171Z5S, HP HP Pavilion zd7000A, WINCOR NIXDORF EPC A4, NEC EASYNOTE P910R00406, NEC VERSAE6300 RNF51118188, and more.
A4tech Nb-57 4492/20/201512/28/2016a4tech_nb-57-449.exe205kbNEC PC-MY18XEZ78, PCCHIPS M770LMRT, IBM 8124PAT, Sony VGN-FW5ZRF_H, SIEMENS SIMATIC IPC647C PROFINET, Gigabyte B85N-WIFI, Fujitsu FPC03080AL, HP H8-1041, Sony SVP1322R4RBI, Toshiba SATELLITE C850-16W, and more.
A4tech Nb-57 334442/11/201512/30/2016a4tech_nb-57-33444.exe84kbGateway 310 2900297, IBM 2373WMV, IBM IBM System x3400 M3 Server -[7379KFG, Toshiba SATELLITE U50-A, LG R580-L.B241P1, IBM 26478RG, DakTech DTGM5, NEC PC-MY18XEZ78, IBM IBM System x3100 -[434842X, Sony VGN-TT1, Packard Bell EasyNote LS85, HP PN133AA-ABU, LG R490-K.ARCWE1, Intel WIV68805-0072, Sony VGN-TZ170C, SAMSUN SQ1S, AT ALZA GAMEBOX, Stone NOTCHA-101, and more.

Please Note: There are particular operating systems known to have problems with A4tech Nb-57:
  • Windows XP Media Center Edition
  • Windows Vista Home Basic
  • Windows 7 Service Pack 1 (Microsoft Windows NT)
  • Windows Vista Ultimate
If you encounter problems with the direct download for these operating systems, please consult the driver download manager for the specific A4tech Nb-57 model.
Laptop A4tech Nb-57Tablet A4tech Nb-57Download A4tech Nb-57Upgrade A4tech Nb-57Update A4tech Nb-572017 A4tech Nb-57Free A4tech Nb-57Data A4tech Nb-57Info A4tech Nb-57Help A4tech Nb-57Guide A4tech Nb-57Comments A4tech Nb-57Windows 10 A4tech Nb-57Vista A4tech Nb-57Windows 7 A4tech Nb-57Install A4tech Nb-57