| 001 | Switch/control unit manufactured in USA |
| 002 | 3488A Mainframe hardware mfrd in China |
| 010 | 10 Channel Relay Multiplexer Module (44470A) |
| 011 | 10 Channel General Purpose Relay Module (44471A) |
| 012 | Dual 4-Channel VHF Switch Module (44472A) |
| 013 | 4 x 4 Matrix Switch Module (44473A) |
| 014 | 16-Bit Digital Input/Output Module (44474A) |
| 015 | Breadboard Module (44476A) |
| 016 | 3-channel 18 GHz Microwave Switch Module (44476B) |
| 017 | 7-channel form-C Relay Module (44477A) |
| 018 | 2-channel Microwave Switch Module (44476B) |
| 019 | 1.3 GHz 50 ohm Multiplexer (44478A) |
| 020 | 1.3 GHz 75 ohm Multiplexer (44478B) |
| 023 | New Version with Updated Firmware (Also Supports the 44470D & 44471D) |
| 0B0 | Do not include manuals |
| 0B3 | Service Manual |
| 401 | Side Handle Kit |
| 44470A | 10-Channel Multiplexer Module |
| 44470D | 20-Channel Multiplexer Module |
| 44471A | 10-Channel General Purpose Relay Module |
| 44471D | 20-Channel General Purpose Relay Module |
| 44472A | Dual 1x4 VHF Multiplexer(300MHz, 50 Ohm) |
| 44473A | 4x4 Two-Wire Matrix Switch Module |
| 44474A | 16-Bit Digital Input/Output Module |
| 44476A | Microwave Multiplexer Module (Triple 1-to-2 18GHz) |
| 44478A | Dual 1x4 RF Multiplexer Module (1.3GHz, 50 Ohm) |
| 44478B | Dual 1x4 RF Multiplexer Module (1.3GHz, 75 Ohm) |
| 907 | Front Handle Kit |
| 908 | Rack Flange Kit for Use without Handles |
| 909 | Front Handle & Rack Flange Kit with Handles |
| 910 | Additional operating and service manual |