corrigendum - purchase of hardware laboratory items - 1.1 hdd 1tb sata toshiba interface -sata 6gb / s buffer size -64 mb connector type -7 pin serial ata storage interface -serial ata-600 spindle speed -7200 rpm hard drive type -internal hard drive 2 blank dvd 3 blu-ray disc 4 dvd drive 5 blu-ray drive 6 web camera 7 crimping tool 8 screwdriver set 9 modam 300mbps wireless wireless n 300 four 10 / 100 lan ports 10 / 100 wan ( internet ) port wpa & wpa2 ( wi-fi protected access ) wi-fi protected setup ( wps ) - pin 10 hub 4port usb 11 router 300mbps 12 switch 16 port 100mbps sixteen 10 / 100 mbps fast ethernet ports 3.2 gbps switching fabric complies with energy standards eee 802.3x flow control auto mdi / mdix crossover for all ports 13 cat6 network cable conductor 0.57 mm bare copper 23awg x 4pairs resistance: 9.38 ohm, pe insulation, pe central cross lan cable cat6 1000 mbps speed unshielded twisted pair ( utp ) 305 m stranded. 14 computer speaker output power: 2w * 2 ( rms ) s / n ratio: 89db separation rate: 70db distortion: 1% frequency response: 60hz - 20khz speaker unit: 2 * 2 dc 5v 15 head phone headset type-over the ear impedance-32 ohm frequency response-20 - 20000 hertz other features-comfortable to wear, perfect fit, clear & crisp sound 16 web camera resolution-10 mp connection type-usb supported os-windows / mac os / linux audio recording-yes video format-24-bit rgb minimum focus range-3 cmconnection type-usb 2.0 17 biometric device 2.4” tft true color lcd fingerprint, password, fp, pin, rfid, fp+rfid, fp+pin+rfid are authentication methodsmax. 1, 000 finger print records max. 100, 000 attendance records rs485, usb drive / link & tcp / ip interface options available access control, exit finger reader / rfid card reader connectivity & auto push technology dc9v 18 rj 45 tester 19 rj 45 connectors