black box port switch

Many of the listed devices are 5‑port switches. Advertised data rates include 10/100/1000 Mbps (Fast/Gigabit Ethernet), listings that note 1000 Mbps, and models reporting higher rates such as 2000 Mbps and 2.5‑Gigabit ports.

Some switches list PoE+ power budgets such as 32 W (noted to support up to four PoE devices) and 60 W. Listings frequently indicate four Gigabit PoE+ ports plus one regular (non‑PoE) Gigabit port.

The compact switches show dimensions roughly ranging from 2.31 × 5.07 × 7.58 inches up to 3.1 × 5.25 × 8.4 inches, with reported weights around 1.13 to 1.81 pounds.

One model lists a long‑range PoE+ mode that can extend PoE+ up to 200 m (656 ft.) and mentions a DIP‑switch option to enable port isolation for ports 1–4.

Several listings highlight fanless designs and silent operation, noting these devices are well suited to quiet environments.

The configuration commonly shown is four Gigabit PoE+ ports plus one non‑PoE Gigabit port.

Some switches list IEEE 802.1p QoS and DSCP pass‑through support; at least one model advertises Jumbo Frame support up to 9 KB.