Mini DIN-8 Serial Connector Signal Descriptions
| Pin | Signal | Description |
| 1 | CLK | Rxd and Txd clock (output) |
| 2 | NC | No Connection |
| 3 | TxD | Transmitted Data (output) |
| 4 | SG | Signal Ground |
| 5 | RxD | Received Data (input) |
| 6 | TxD+ | Balanced transmit (output) |
| 7 | Vcc | +5 VDC regulated, 300 mA max (output power) |
| 8 | RxD+ | Balanced receive (input) |
| Shield | PG | Protective Ground |
9 Pin RS-232 Serial Connector Signal Descriptions
| Pin | Signal | Description |
| 1 | DCD | Data Carrier Detect |
| 2 | RXD | Received data |
| 3 | TXD | Transmitted Data |
| 4 | DTR | Data Terminal Ready |
| 5 | GND | Frame Ground |
| 6 | DSR | Data Set Ready |
| 7 | RTS | Request To Send |
| 8 | CTS | Clear To Send |
| 9 | RING | Ring Indicator (Not Used) |
SCSI Interface Signal Descriptions
| Pin | Signal | Description |
| 1 | REQ | Request data transfer |
| 2 | MSG | Message signal from target device |
| 3 | I/O | Controls direction of valid data |
| 4 | RST | SCSI bus RESET condition |
| 5 | ACK | Acknowledgment for data transfer handshake |
| 6 | BSY | Indicates the SCSI bus is in use |
| 7, 9, 14, 16, 18, 24 | GND | Logic Ground |
| 8 | DB0 | Data bit 0 |
| 10 | DB3 | Data bit 3 |
| 11 | DB5 | Data bit 5 |
| 12 | DB6 | Data bit 6 |
| 13 | DB7 | Data bit 7 |
| 15 | C/D | Indicates Control or Data is on the SCSI bus |
| 17 | ATN | An Attention condition exist |
| 19 | EL | Select a target or reselects the initiator |
| 20 | PARITY | A data bit generated to maintain an odd number of bits |
| 21 | DB1 | Data bit 1 |
| 22 | DB2 | Data bit 2 |
| 23 | DB4 | Data bit 4 |
| 25 | NC | No Connection |