Used for about 4 months, it is just like new and comes with the box and rack mount kit. There are no issues, and you are welcome to check it as much as you like.
-Product code CRS309-1G-8S+IN
-CPU Dual-core 98DX8208 800 MHz
-RAM 512 MB
-Storage Flash 16 MB
-Switch chip model 98DX8208
-Dimensions 272 x 191 x 44 mm
-Operating temperature -40°C ... +70°C tested
-Operating system SwOS / RouterOS (Dual boot)
-License level 5
-10/100/1000 Ethernet ports 1
-10G SFP+ ports 8
-Serial port RS232
-PoE in Yes, Passive POE and 802.3af/at compliant
-Supported input voltage 12 - 57 V (DC jack), 18 - 57 V (PoE in)
-Number of DC jacks 1
-Max power consumption 23 W / 17 W (without attachments)
-When using 802.3af/at to power this device, we recommend not using grounding for best compatibility.
-Power adapter 24 V 1.2 A
-Screw kit
-Rack ears