The SBP-C03 is a 1 RU (1.75") high 19-inch rack-mountable card cage unit capable of mounting up to three 1.0-inch wide modules. Ideally suited to those applications where rack space may be limited, the SBP-C03 may also be used in desktop installations by the addition of user-installed rubber feet on the bottom of the cage and removal of the two rack-mount adapter brackets. Available in a satin silver finish, the SBP-C03 is provided with one external 120-240 VAC power supply with a 12VDC at 2A output, and includes reverse polarity protection. Two separate isolated DC inputs are provided for mission critical/high reliability applications where power supply redundancy is required. PoE (Power over Ethernet) modules may also be used, by replacing the power supply with a +48VDC unit, and connecting the supply output to the DC power input of each PoE module. Cooling is by natural air convection, eliminating the need for unreliable and noisy cooling fans, or periodic air filter maintenance. The SBP-C03 is designed for long-term reliable operation in harsh industrial environments, and may be deployed in most out-of-plant installations, such as those found in intelligent transportation systems and factory automation/control applications. Plug-and-play design ensures ease of installation, and any module may be hot-swapped without any impact to the operation of the other modules within the card cage.