Among the add-ons available from NEC is the single-board computer, an AMD-based PC with a 1.6GHz dual-core processor, 2 GB of RAM and a 32-GB solid-state drive, or 160- or 250-GB spinning drive loaded with Windows 7 embedded. The exposed side of the card contains four USB 2.0 ports, a Gigabit Ethernet port and DisplayPort video output. For Wi-Fi, NEC offers a third-party product. The host monitor can be controlled through an internal connection with the card via RS-232. Among the other option cards are an ATSC digital high-definition tuner card and an audio module.