bids are invited for desktop monitor - size: 20 x 21 , led , vga & hdmi, resolution 1920x1080 pixels , desktop standard key board - usb 3.0, 104 keys, wired, minimum dimensions: keyboard: 434x134x24 mm , mouse - optical wired,usb 3.0, dimension: 5x9.7x12.9 cm, , system speaker - 10 watt, wired, speakers: 36 mm x 2, audio jack, connector type: usb 2.0 , webcam with inbuilt mic - full hd 1080p video calling (up to 1920 x 1080 pixels) with the latest version of skype for windows, with automatic low light reduction, h.264 video compression. , desktop computer microphone - electric corded with usb connector, audio sebnsitivity: 46.9db , ear phone - sensitivity: 104 db, frequency response: 12 hz - 22 khz , scientific calculator - with 417 functions, 10-digit mantissa + 2-digit exponential display, non-programmable, basic trigonometrical & statistics functions , wifi adaptor - usb adaptor, nano size, 300 mbps , desktop network switch - 5 ports, 10/100/1000mbps desktop switch, power adapter,rj45 port supporting auto-mdi/mdix, ieee 802.3x flow control, support 802.1p/dscp qos function , usb hub - 04 ports, universal os suported, usb specification version 3.0 hot plug & play usb device , wireless presentation remote & laser pointer - universal compatibility with oss, meter operating range 20 meters, dual conectivity: usb & bluetooth, supported with app. , ram - 4 gb, ddr-iii, form factor dimm, memory speed:1333 mhz total quantity : 1