USB or PS2. A mini size industrial keyboard, water resistant, washable, made of silicone.

Compatibility: IBM AT, Windows Vista/XP/2000/ME/98.
Language: All the languages compatible with Windows.
Communication: USB1.1, PS/2 & USB+PS/2.
Cable length: 1.6 m.
Dimension: 222(L) x 80(W) x 10(H) mm.
Key layout: 75 keys + function keys.
Key height: 5.5 mm.
Key travel: 2 mm.
Net weight: 100 g.
Electrical data: +5V DC @250 mA.
Key lifespan: > 5,000,000 times.
Operating temperature: -30 to 80.
Protection level: IP68.
Approvals: CE, FCC, RoHS & WEEE.