Features Scissors type structure makes stable, silent and tactile feedback Mini compact-size for convenient usage and space saving Optional USB or PS/2 connection for true Plug and Play Optional Black or Beige color Specifications Compatibility: USB 1.1 or PS/2 Key Layout: 17 keys Travel Distance: 2.5 -/+ 0.3mm Travel to Peak: 0.8 -/+ 0.3mm Peak Force: 50 -/+ 10 gm Switch Life: 10 million life cycles Electronic Data: +5VDC -/+ 5% @ 100mA Dimensions: 109 (L) x 88(W) x 23.5(H) mm Weight: 0.12kg Availability: Usually ships the same business day Solidtek ACK-100U 17-Key Mini Keypad (USB & PS/2 Options) ACK-100URegular price: $29.00Sale price: $15.00option: PS/2-BeigePS/2-BlackUSB-Beige(+1.00)USB-Black(+1.00) Secure On-Line Ordering Site Tel: (888) 860-4416 Fax: (732) 416-8788 sales@pctekonline.com Business hours are from 10:30am to 7:00pm EST Monday to Friday 3 Kellogg Court Suite 11 Edison NJ 08817 Copyright (C) 1997-2011, PCTekOnline.com All rights reserved. Thank you for shopping at PCTekOnline.com !