Maximum: 128 (via Daisy-chain), Console Ports: 4 x USB Type A Female, 2 x 6-pin Mini-DIN Female (Purple), 2 x HDB-15 Female (Blue), KVM Ports: 8 x RJ-45 Female, Daisy Chain Ports: 1 x DB-25 Female (Black), 1 x DB-25 Male (Black), Housing: Metal. The KH2508A KVM switch is a control unit that allows IT administrators to access and control multiple computers from two PS/2 or USB KVM consoles (two bus). Operators working at up to two consoles can independently and simultaneously take control of up to 8 computers.