
ESMexpress provides for extreme resistance against shock and vibration. Eight screws secure the module to the carrier board. In addition, a mechanically robust connector specified for MIL and railway applications supports differential signals with up to 8 GHz, features a stacking height of 5 mm with a minimum tolerance of +/-0.3 mm, is equipped with fixed contacts for power supply, and is specified for an operating temperature range of -55°C to +125°C. The Intel-based XM1 offers a screened temperature range of -40°C to +85°C. The electrical signals are distributed on two 120-pin connectors and are only defined for modern serial buses. For PCI Express there are four single lane ports (4 ×1) and one port that can be configured as 1 ×16, 1 ×8, 2 ×4 or 2 ×1. Other ports include three 1-Gigabit Ethernet (also as 10- Gigabit), eight USB, three SATA, SDVO, LVDS, HD Audio, several utility signals, and a single 12V power supply.
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