Pinout
| Contacts | 6 (4 used) |
|---|---|
| Supply | 5 V |
| Clock | Generated by the device, 10–16.7 kHz |
| Output type | Open-collector, pulled up to 5 V |
| Duplex | Half duplex, synchronous |
| Frame | 11 bits: start, 8 data (LSB first), odd parity, stop |
| Colour code (PC 99) | Purple keyboard, green mouse |
| Hot-plug | Not supported by the standard |
USB Type-A / Type-BContacts: 4 (USB 2.0), 9 (USB 3.x); Bus voltage: 5 V; Current (standard port): 500 mA (USB 2.0), 900 mA (USB 3.x)
3.5mm audio jack (TRS)Contacts: 2 (TS), 3 (TRS), 4 (TRRS); Plug diameter: 3.5 mm; Stereo pinout: Tip left, ring right, sleeve ground
Ethernet (RJ45, T568B)Contacts: 8 (8P8C); Contact pitch: 1.02 mm; Pairs used: 2 pairs (10/100BASE-T, pins 1-2, 3-6), 4 pairs (1000BASE-T)
HDMI (Type A, 19 pins)Contacts: 19; Video signals: 3 TMDS data pairs + 1 clock pair; Max bandwidth: 10.2 Gbit/s (1.3/1.4), 18 Gbit/s (2.0), 48 Gbit/s (2.1)
Micro-HDMI (Type D, 19 pins)Contacts: 19 (numbered differently from Type A); Contact pitch: 0.4 mm; Plug size: ≈ 6.4 × 2.8 mm
VGA (DE-15)Contacts: 15 in 3 rows (DE-15 high density); Video signals: Analog R, G, B, 0.7 V peak-to-peak into 75 Ω; Sync: Separate H and V sync, TTL level
USB-C (receptacle, key pins)Contacts: 24 (receptacle); Contact pitch: 0.5 mm; Plug size: 8.25 × 2.4 mm, reversible
USB Type-C (USB-PD capable receptacle)Contacts: 24 (receptacle); Default VBUS: 5 V until a PD contract is negotiated; PD fixed voltages (SPR): 5, 9, 15, 20 V