... and high quality 3.water-proof design, 4.USB or PS2 interface are available 1.Saving power,and 3 calss-proof ... and high quality 4.water-proof design,5.USB or PS2 interface are available6.Antifraying and unfading.7.Strong material and ... syringe,durable in use 9.Layout: 104 keys USB optical wired keyboard T300