Enterasys Networks Vertical Horizon interface modules.
| Manufacturer Part Number | Description | |
| VHIM1000-S1LX | 1 port 1000Base-LX SC connector |  |
| VHIM1000-S1SX | 1 port 1000Base-SX SC connector | |
| VHIM1000-S1TX | 1 port 1000Base-T Module | |
| VHIM100-S1SFX | 1 Port 100Base-FX module, SMF | |
| VHIM1000-S1GM | 1 port GBIC uplink module | |
| VHIM-2GT-L3 | 2 port 1000BaseT L3 uplink module via RJ45 connector | |
| VHIM100-S2MFX | 2 port 100Base-FX Module, MMF | |
| VHSIM-G6 | 2 port Gigabit Ethernet VHSIM Module | |
| VHSIM-G02 | 2 port RJ-45 1000Base-T VHSIM | |
| VHSIM2-A6DP | 45Mbps - 622Mbps ATM VHSIM Module | |
| VHSIM-A6DP | ATM very high speed interface module | |