TP-LINK TL-SG108 8-Port Gigabit Switch (Metal Case) for $17.99.  Shipping is free on orders over $49.  If needed, use this Filler Tool to pad the order for free shipping.  Here is a screenshot for your reference.  It supports IEEE 802.3x for full duplex mode, non-blocking switching, MAC address auto-learning and auto-aging, and more.