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12/5/2016 new driver models for direct download:1146
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A4tech Kb 720a 5 stars review"The best driver WIKI ever! I wil keep coming back for sure."Eric Smalter, Boston, MA
Supported languages for A4tech Kb 720a
Certifications for A4tech Kb 720a
5 stars for A4tech Kb 720a "WOW! Finally my PC got up to speed!" Melany Kim 7/18/2015

Checking...for 12/5/2016 Updates

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

However, a new version of A4tech Kb 720a might have been uploaded since our last site update.

A4tech Kb 720a Driver Download

Windows Compatibility for A4tech Kb 720a driver

A4tech Kb 720a Driver Details:

A4tech Kb 720a File Name: a4tech_kb_720a.zip

A4tech Kb 720a Driver Version: 5113J76I/

A4tech Kb 720a ZIP Size: 118.kb

Manufacturer: A4tech

A4tech Kb 720a was fully scanned at: 12/2/2016
Scan Status: driver download scanOK

A4tech Kb 720a special revision for: Windows XP Professional x64 Edition 32 bit, Windows 8 Pro 64 bit, Windows Vista Starter 64 bit, Windows 7 Professional 64 bit, Windows 8 Enterprise 32 bit, Windows 10 32 bit, Windows XP Tablet PC Edition 64 bit, Windows 7 Home Premium 32 bit, Windows XP Professional N 64 bit, Windows XP Media Center Edition 64 bit, Windows 7 Starter 64 bit, Windows XP Professional 32 bit

A4tech Kb 720a Download Stats:

Driver Uploaded: 11/29/2016

Direct Downloads: 381
Most Recent Download: 12/3/2016
Managed Downloads: 4239
Most Recent Download: 12/3/2016
Download Mirrors: 3
Current Delay: 19 Seconds
Driver License: Free to the general public

Direct Download Success Stats:

Reports Issued By 363/381 Users

Success Reported By 107/363 Users

Driver Download Score64/100

Driver Installation Score61/100

Overall preformance Score68/100

A4tech Kb 720a 12 Thumbs Up12Thumbs
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A4tech Kb 720a 2 Thumbs Down2Thumbs
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A4tech Kb 720a 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 4084/4239 Users

Success Reported By 3431/4084 Users

Driver Download Score78/100

Driver Installation Score92/100

Overall preformance Score93/100

A4tech Kb 720a 3366 Thumbs Up3366Thumbs
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A4tech Kb 720a 202 Thumbs Down202Thumbs
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A4tech Kb 720a 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 Kb 720a 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 Kb 720a + all other outdated drivers, and installs them all at once.

Please help us maintain a helpfull driver collection.
After downloading and installing A4tech Kb 720a, or the driver installation manager, take a few minutes to send us a report:
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A4tech Kb 720a 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 Kb 720a disfunctions.

Scan performed on 12/5/2016, Computer: IBM 8114E9G

Outdated or Corrupted drivers:10/23

Device/DriverStatusStatus DescriptionUpdated By Scanner
Motherboards
Intel Controlador de host universal USB de la familia Intel(R) ICH8 - 2834Up To Date and Functioning
Mice And Touchpads
Logitech Logitech HID-compliant Cordless MouseUp To Date and Functioning
A4Tech Compatible USB Port MouseOutdated
Usb Devices
Intel(R) Intel(R) USB 3.0 eXtensible Host ControllerUp To Date and Functioning
Microsoft Standard OpenHCD USB-HostcontrollerUp To Date and Functioning
X10 Wireless X10 USB Wireless Transceiver (ACPI-compliant)Corrupted By A4tech Kb 720a
Sound Cards And Media Devices
AVerMedia AVerMedia A350 MiniCard Hybrid ATSC TVCorrupted By A4tech Kb 720a
Intel(R) High Definition Audio-apparaatUp To Date and Functioning
Network Cards
Qualcomm Atheros Qualcomm Atheros AR5BWB222 Wireless Network AdapterUp To Date and Functioning
Keyboards
Microsoft Keyboard Device FilterUp To Date and Functioning
Hard Disk Controller
Intel(R) ICH8R/DH/DO SATA AHCI ControllerUp To Date and Functioning
Others
Nokia Nokia USB OBEXCorrupted By A4tech Kb 720a
Nokia Nokia 5230 USB OBEXUp To Date and Functioning
Realtek Semiconduct Realtek PCIE CardReaderUp To Date and Functioning
Intel Intel(r) AIM External Flat Panel Driver 7Corrupted By A4tech Kb 720a
Microsoft HID-compliant apparaatUp To Date and Functioning
Intel Intel(r) AIM External Flat Panel Driver 0Up To Date and Functioning
Cameras, Webcams And Scanners
Canon CanoScan LiDE 110Outdated
Video Cards
Intel(R) HD GraphicsOutdated
Input Devices
Logitech Logitech Wheel Mouse (USB)Corrupted By A4tech Kb 720a
Port Devices
D-Link USB Single PortOutdated
Monitors
Sony Digital Flat Panel (1024x768)Up To Date and Functioning
Mobile Phones And Portable Devices
Acer NOKIACorrupted By A4tech Kb 720a

Scan performed on 12/5/2016, Computer: HP RX881AA-ABA M8000

Outdated or Corrupted drivers:7/20

Device/DriverStatusStatus DescriptionUpdated By Scanner
Motherboards
ST Microelectronics ST Micro ScreenDetection Sensor DriverCorrupted By A4tech Kb 720a
Mice And Touchpads
Microsoft Souris Microsoft USB Wheel Mouse OpticalUp To Date and Functioning
Logitech Logitech WheelMouse (USB)Up To Date and Functioning
Logitech HID-compliant muisUp To Date and Functioning
Usb Devices
Hewlett-Packard HP LaserJet 3050 (DOT4USB)Corrupted By A4tech Kb 720a
Intel Mobile USB DeviceCorrupted By A4tech Kb 720a
Sound Cards And Media Devices
AMD AMD SATA ControllerCorrupted By A4tech Kb 720a
C-Media Multimedia Audio ControllerUp To Date and Functioning
YUAN High-Tech Development T507 TV Tuner CardUp To Date and Functioning
Network Cards
Huawei Vodafone Mobile Broadband Network Adapter (Huawei)Outdated
Keyboards
Microsoft Keyboard Device FilterUp To Date and Functioning
Hard Disk Controller
ATI ATI PCI IDE Bus Master ControllerUp To Date and Functioning
Others
Unibrain OHCI Compliant IEEE 1394 Host ControllerUp To Date and Functioning
Microsoft HID-compliant apparaatUp To Date and Functioning
Cameras, Webcams And Scanners
Canon Canon MP600RUp To Date and Functioning
Video Cards
ATI ATI MOBILITY RADEON 9600/9700 SeriesUp To Date and Functioning
Input Devices
KME USB Human Interface DeviceCorrupted By A4tech Kb 720a
Port Devices
MediaTek MediaTek PreLoader USB VCOM Port (COM51)Up To Date and Functioning
Monitors
Sony Digital Flat Panel (1024x768)Corrupted By A4tech Kb 720a
Mobile Phones And Portable Devices
Acer NOKIAUp To Date and Functioning
Driver ModelOriginal Upload DateLast ModificationDriver FileFile SizeCompatible Computer ModelsAvailabilty To Instalation Manager
A4tech Kb 720a 71.131.133/6/201512/27/2015a4tech_kb_720a-71.131.13.exe109kbPanasonic CF-53AAC01FD, Lenovo 57125694, HP NQ973AA-ABF p6032f, Sony VGN-C140FP, HP HP ProBook 4730s, Sony VPCL22AJ, Packard Bell IMEDIA D7010 NL, HP RF759AA-ABF s7640.f, IBM 2374F14, Lenovo 2756AF8, Lenovo 20AA000SUS, HP H8-1525eg, HP HP Pavilion g6-1a45ca, Gigabyte GA-6FASV1, HP P1089A-ABU 7965, HP VN470AA-UUZ m9837ch, MSI MS-9179, Fujitsu AMILO Xi 2528, and more.
A4tech Kb 720a 2.122002/13/201512/29/2015atk-2.12200.exe21kbGateway FX4710-UB802A, Hora Hora4000, Packard Bell IMEDIA D3013, Fujitsu FMVXDBJH2Z, Sony VGN-A39GP, Dimotion PCDO5U1, Lenovo ThinkPad Z61m, HP FL389AA-ABZ a6675it, Sony VGN-CR35T_B, Sony VGN-P92KS, Panasonic CF-74KCJDZAM, Sony VGX-TP1E, and more.
A4tech Kb 720a 91.109/4/201412/28/2015a4tech_kb_720a-91.10.exe196kbSony VGC-RT150DY, HP HP EliteBook 6930p, Panasonic CF-30KBPAX2M, HP EZ090AA-ACP w5510.at, Toshiba Dynabook Qosmio D711/T3EB, Acer TravelMate 250, Compaq Presario 2700EA 470024-565, Sony VGN-NS21X_S, ASUS Z9PE-D16 Series, Gigabyte M1028, Sony VGN-CS2, IBM IBM System X3100 M4 -[2582K1G, HP Compaq nx9020, Lenovo ThinkStation S10, Panasonic CF-W2EW6AXS, Gateway P-6317 HSN, and more.
A4tech Kb 720a O1.1391.12.111/26/201412/30/2015a4tech_kb_720a-o1.1391.12.1.exe181kbSony VGN-NS90HS_6_W, Panasonic CF-W7BWHNJR, Fujitsu FMVNFB70RG, Toshiba Dynabook TX/77MWHYD, ECS P55H-A SLI, Apple Macmini3,1, Sony VGN-NS10L_S, Sony VPCEB4E9R, HP FJ377AA-ABF a6538.f, ASUS K52JT, Fujitsu N6220, HP Compaq Presario Notebook PC, LG F1-2242HS, IBM D945PLRN, Lenovo 6475VE6, Sony SVE15126CNW, NEC RNG41146695, and more.
A4tech Kb 720a 81.1421.110/24/201412/29/2015mvslvgcb-81.1421.1.exe23kbAT TRILINE PROFI I102, HP VS179AA-ABH p6250nl, HP HP Compaq dc7100 SFF, Gigabyte P35-S3, Acer Aspire 5735, Fujitsu FMVC18WA, Sony VGN-Z47GD_X, HP HP Pavilion 15 Notebook PC, NEC PC-MK32MEZDG, Compaq PW783AA-ACJ SR1425IL FD440, IBM System x3550 M3 -[7944AC1, IBM 2724W13, HP PL494AA-ABH t760.be, and more.
A4tech Kb 720a 2.11.134812/26/201412/27/2015a4tech_kb_720a-2.11.1348.exe85kbIBM 819437U, HP GC359AV-ABA a6010e, IBM 6223Y32, HP Presario R3000, HP HPE-413at, Fujitsu M6VCG, Omni OTC-H3222D00, IBM 1847Y1Y, HP KX568AA-UUW m9364.sc, IBM IBM eServer x3105 -[434722G, HP PL497AA-UUZ a720.ch, Sony VPCEA2AFJ, Fujitsu LifeBook T4310, RIOWORKS HDAMB, IBM 80847CG, Sony VGN-FW17_B, NEC PC-GL26ES9LE, HP AZ205AAR-ABA p6300z, Fujitsu FMVNB75ST, and more.
A4tech Kb 720a 2.1382312/13/201412/30/2015a4tech_kb_720a-2.13823.exe175kbSony VGN-A270, IBM 8215WBM, Gateway GT4228m, HP RY873AAR-ABA a6028x, Toshiba Dynabook T552/36FBK, Acer TravelMate 8371, Acer AS5320, Compaq NP291AA-AB2 SR5837CX, IBM 8184W3Z, NEC PC-MY21AESED983, HP PS225AA-ABE t835.es, Dell Inspiron M4040, Gateway H5212, Toshiba Satellite T130-11U, and more.
A4tech Kb 720a 1.103432/15/201512/29/2015a4tech_kb_720a-1.10343.exe72kbSony VGN-Z41XRD_B, Toshiba Dynabook T552/36HRJ, Lenovo ThinkPad T420s, Lenovo 6458V35, Dell OptiPlex G1 350Mbr+, HP EG601AA-AB1 a1212k, HP HP Compaq nx6125, IBM 62253J9, Lenovo ThinkPad R61i, HP Presario F500, and more.
A4tech Kb 720a 732.1622/12/201512/28/2015velvtgm-732.162.exe219kbAcer TravelMate 2460, Toshiba TECRA A2, Sony VGN-TZ250N, LG R510-K.A275K, Lenovo ThinkCentre A63, Panasonic CF-W8EWYAJP, Compaq FK583AA-A2L SR5633WM, HP FR546AA-ABE a6653es, Panasonic CF-T5MWJTFBF, NEC RND41042195, AMD & ATI ATI RC410MD-SB460, HP HP ProBook 6445b, HP WC694AA-UUG HPE-110be, NEC PC-LS350ES1KR, Fujitsu FMVD707AY, Gateway MX6027H, HP HP Pavilion zd8000, NEC PC-LL750ES3KS, Fujitsu FMVNA7BEC, and more.
A4tech Kb 720a I22649/3/201412/27/2015a4tech_kb_720a-i2264.exe216kbWIPRO WSG59355W7S-0014, IBM 2374E80, LG P1-J302E1, MiTAC 9525, HP PC106A-ABA a610, Sony VGN-NS11SR_S, HP PG129AA-UUZ t640.ch, Compaq P2800N P170X520WC25EC, Compaq PJ517AA-ABA SR1220NX NA441, NEC NEC POWERMATE X8550, Dell L550cx, EMachines EMachines G420, Fujitsu CELSIUS W370, and more.
A4tech Kb 720a 706929/25/201412/30/2015a4tech_kb_720a-70692.exe80kbSony SVE15127CDS, Fujitsu FMVNS1E3, NEC PC-VY25AAZ7A, Sony VGN-FW17_B, Sony VGN-AS34B, HP G5350nl, HP Db234a-abg 504a, AOpen MP65, Panasonic CF-53AACZYFT, HP BT597AA-ABA s5604f, Intel LC-92T10, Lenovo ThinkPad T410, HP HP Compaq 7900, HP P6-2370ef, and more.
A4tech Kb 720a 431.17212/29/201412/27/2015a4tech_kb_720a-431.172.exe97kbPanasonic CF-74KCJDZAM, Sony VGX-TP1E, Fujitsu D3161-B1, Sony VGN-AR91PS, HP HPE-531sc, IBM 2889CG6, Sony VPCZ11A7R, HP HP ProBook 4421s, Lenovo ThinkPad L512, Lenovo 00P5095, and more.
A4tech Kb 720a 2.1341.12.112/28/201412/27/2015a4tech_kb_720a-2.1341.12.1.exe218kbCompaq FK583AA-A2L SR5633WM, Lenovo 1952T60, LG LB50-CC34ZL, Powerspec B651, Lenovo ThinkPad Edge E431, WIPRO WSG37425W7-0012, HP HP Compaq nx6120, Fujitsu FMVNX95UD, NEC PC-GV256CLAJ, THEIS TH-P925/945G7MD-8KS2HV/1024/80/Profi-Towe, WIPRO WIV37455-0252, Gateway MD7321U, HP KY731AA-AKL a6784l, Panasonic CF-18KDHNBVA, and more.
A4tech Kb 720a 807362/22/201512/30/2015hjuy-80736.exe157kbNEC EASYNOTE PB41Q00006, Packard Bell EASYNOTE_MX52-B-029, NEC PC-LL5006D2DR, Toshiba Dynabook Qosmio F30/770LS, LG A510-U.AESGE2, Fujitsu FMVNX95SD, LG LW75-P333, EMachines Emachine E725, HP KX781AV-ABJ p6120jp, HP KT536AA-ABJ IQ507jp, ASUS BM2230, Epson Endeavor MT8800, Sony VPCEB4E9R, Fujitsu LIFEBOOK S 7020, IBM 8419KMA, Sony VGC-JS410F, Lenovo 7665WRU, HP CQ1160FRm, Sony VPCEJ3D1E, and more.
A4tech Kb 720a 701.1091/12/201512/29/2015a4tech_kb_720a-701.109.exe129kbHP HP Compaq Presario CQ61, IBM 8212H1U, NCR 7457-3500-8801, Lanix BRAIN 4140, Sony VPCEC2RFX, Sony VPCF1390S, Fujitsu AMILO Desktop La3740, HP PS318AA-ABY t870.dk, LG S530-L.ACR1AD, Sony VGN-NS328J, IBM 8184MMY, Gateway GM5485H, and more.
A4tech Kb 720a 2.121.161.112/21/201412/28/2015a4tech_kb_720a-2.121.161.1.exe116kbAcer NC-V5-531-10076G50MASS, Sony SVT1113AJE, TCL N700, HP GX610AAR-ABA m9180f, HP Presario R4000, IBM Eserver xSeries 235 -[86716BG, ECS 332, NEC PC-MY30VBZED, Advent DT2, HP 23-b232e, Sony VGN-FW17_B, HP HP Compaq dc7900 Convertible Microtowe, HP KT850AV-ABJ s3540jp, HP KJ325AA-ABG a6440a, Sony VGN-UX90PS, Toshiba Dynabook R732/E25HR, Sony VGN-SR430J, and more.
A4tech Kb 720a D2.1088312/21/201412/28/2015a4tech_kb_720a-d2.10883.exe190kbHP 23-b340ef, HP P5282A-ABA 9995, MAXDATA PLATINUM 100 I M5, HP 27-1015ef, HP PG129AA-UUZ t640.ch, HP HP dx2000 MT, Packard Bell OneTwo S3221, LG B55PS.AR3500D, HP VS165AA-UUW s5270sc, HP PW774AA-ABE w5040.es, Toshiba Dynabook Satellite T42 240E/5W, Sony VGN-NS31MT_S, Itautec LX202, Panasonic CF-SX2BE4BP, NEC PC-VZ500AD, HP PW579AA-ABG m7088a, and more.
A4tech Kb 720a E42242.11/10/201512/28/2015a4tech_kb_720a-e42242.1.exe138kbHP PS206AA-B14 t880.be, Toshiba SATELLITE C855-23Z, IBM ThinkPad X41 Tablet, Lenovo 6075Y5X, NEC PC-VK24LFW23RZH, ICP / IEi IMBA-Q454, HP RF772AA-ABF t3611.f, Acer Aspire 3810TZG, Sony VGN-FW160AE, IBM 62253J9, Lenovo ThinkCentre M55, and more.
A4tech Kb 720a 62422.112/4/201412/28/2015lwbub-62422.1.exe82kbSony VGC-LS31N, Panasonic CF-19FLJC7AA, Panasonic CF-50GAKUUKM, Lenovo IdeaPad S10e, Lenovo 1S16800336100W2, Sony VPCZ12X9R, Gateway MX6627, LG LS50-A514ZL, Sony VGX-X90P, HP KT439AA-AB4 a6545d, HP WC702AA-UUG HPE-130be, Notebook MIM2260, Sony VGN-CS26G_P, Lenovo ThinkPad W500, HP EP074AA-ABU m7340.uk, Panasonic CF-50GAKUUKM, Lenovo 10245BG, Sony VGN-FE17SP, and more.
A4tech Kb 720a 80621.112/8/201412/27/2015ap-80621.1.exe182kbHP PS303AA-ABH t870.nl, HP NB939AA-ABF IQ525f, NEC PC-LL770BD, IBM 682466A, HP GU631AA-UUW a6225.sc, HP P6-2202el, HP FK522AAR-ABA a6544f, HP FK558AAR-ABA a6604f, Acer Aspire 3660, Fujitsu FMVNFD70W, and more.
A4tech Kb 720a 407692/9/201512/28/2015-40769.exe193kbNEC PC-VY20AED5MFA5, IBM 8184RUM, LG R470-K.AR85L, Sony VPCL22AJ, NEC PC-VX500BD, Fujitsu FMVCE35E5, HP HP Compaq dc7600 Base Convertible Minito, NEC PC-MY28VLZEDX8F, NEC PC-MK32MEZDG, Toshiba PSK1SE-005002GR, Sony VGN-CS31Z_Q, Compaq NY574AA-ABM CQ5205LA, GETAC 9270D, NEC PC-MY28FEZR6, Sony VPCEA2AFJ, HP HP ENVY 17 3D Notebook PC, and more.
A4tech Kb 720a 822643/1/201512/28/2015a4tech_kb_720a-82264.exe66kbSony VGN-CS2, IBM IBM System X3100 M4 -[2582K1G, HP Compaq nx9020, Lenovo ThinkStation S10, Panasonic CF-W2EW6AXS, Gateway P-6317 HSN, Acer Aspire 5710Z, Gigabyte P35-S3, Toshiba SATELLITE C850-1C4, HP PS225AA-ABE t835.es, Fujitsu FMVNS8AE, HP HP Pavilion g6-1b34ca, IBM IBM eServer x226-[8648W16, Lenovo 10AH0016US, LG LW75-P333, HP GM435AA-UUW m8180.sc-a, Toshiba Dynabook EX1/524CMEWD, Panasonic CF-S8HYEPDR, Dell PowerVault NX3200, and more.
A4tech Kb 720a 6004411/21/201412/28/2015fiijxdjeq-60044.exe30kbLenovo Lenovo N500 Notebook, Toshiba PSK1SE-005002GR, Lenovo ThinkPad X121e, Gateway GM5688E, Lenovo ThinkCentre M58, Toshiba Dynabook T552/58HKD, Itautec LX202, IBM 2647A5G, HP HP Pavilion DV6-3206AX, MouseComputer H87M-S01, Fujitsu CELSIUS R610, HP HP Pavilion tx1000 Notebook PC, IBM 8172QGW, Packard Bell IMEDIA 6430, and more.
A4tech Kb 720a 2039312/2/201412/28/2015a4tech_kb_720a-20393.exe189kbSony VGN-FW160D, Notebook MIM2300, HP P6635c, Packard Bell EasyNote_MX36-U-051, Sony VGN-FJ11_W, Sony VGN-AW230J, AnabelleB Argyle M410, SIEMENS SIMATIC IPC647C PROFINET, HP GG662AA-ABD a6041.at, Toshiba Satellite R630, Sony VPCF235FA, Fujitsu FMVA42EWB, MSI GT60 2OJWS, Sun Microsystems Munich, WIPRO WSG37425W7-0012, Compaq GC662AA-ABA SR5113WM, ASUS 1015T, Lenovo 6458V35, and more.
A4tech Kb 720a 802.12.122/12/201512/30/2015a4tech_kb_720a-802.12.12.exe48kbIBM 1834RUG, Sony VGN-FE770G, IBM 2669W58, IBM 8212A94, Viglen EQ100, HP KB010AA-AKB a6330.cs, RM Plc RM ECOQUIET 630A, Gigabyte M1028, Sony VGX-X90P, Toshiba Satego P100, and more.
A4tech Kb 720a 2074910/31/201412/27/2015a4tech_kb_720a-20749.exe115kbMedion E1312, HP Presario F500, IBM 812235U, LG S535-PE5WK, Acer Acer Project, HP HP Pavilion dv9000 NoteBook PC, Acer Aspire 8730G, Seneca PRO0542, LG B55MS.ARB4B1K, HP D7223D-ABA A530E, HP 610-1130uk, and more.


Please Note: There are particular operating systems known to have problems with A4tech Kb 720a:
  • Windows XP Home Edition, for home desktops and laptops
  • Windows 7 Home Basic
  • Windows Vista Starter
  • Windows XP Starter Edition
  • Windows Vista Home Premium
  • Windows XP 64-bit Edition
  • Windows XP Tablet PC Edition
  • Windows 7 Ultimate
If you encounter problems with the direct download for these operating systems, please consult the driver download manager for the specific A4tech Kb 720a model.
Laptop A4tech Kb 720aTablet A4tech Kb 720aDownload A4tech Kb 720aUpgrade A4tech Kb 720aUpdate A4tech Kb 720a2016 A4tech Kb 720aFree A4tech Kb 720aData A4tech Kb 720aInfo A4tech Kb 720aHelp A4tech Kb 720aGuide A4tech Kb 720aComments A4tech Kb 720aWindows 10 A4tech Kb 720aVista A4tech Kb 720aWindows 7 A4tech Kb 720aInstall A4tech Kb 720a