The SM-32A is a single-wide service module with 32 asynchronous (async) ports at speeds up to 230.4 kbps. Asynchronous ports provide highly flexible connections that allow access to EIA-232 devices across a TCP/IP network. The SM-32A module significantly increases async port density support for Cisco 2900 and Cisco 3900/3900E Series Integrated Services Routers Generation 2 (ISR G2). Although called a service module, the SM-32A is designed as a network module featuring 32 high-density async ports at speeds up to 230.4 kbps per port. The SM-32 module contains primarily surface mount technology (SMT) components. Only enable (EN) LED is provided. Online insertion and removal (OIR) of the SM-32A module is supported. The 32-port service module has low power consumption with a maximum of 15.72 W.