Perfect mid-range smart-switch switch with active 802.3af/at and passive PoE out!

The CRS112-8P-4S-IN is an eight Gigabit RJ45 port PoE switch with versatile PoE output options including autosensing 802.3af/at PoE/PoE+ as well as passive PoE. In addition to the copper ports it sports four SFP ports to provide optical fiber connectivity at up to 1 Gbps, These SFP cages are compatible with RJ-45 copper modules such as the MikroTik S-RJ01 .

The CRS112-8P-4S-IN is equipped with 12 independent switching ports. A 28V 3.4 A power supply is already included in the box. There is a secondary DC jack on the back of the enclosure that supports a 48-57 V power supply (not included, can be purchased separately). In addition to powering passive PoE devices at 24V using the included 28V power the CRS112-8P-4S-IN can power 48V 802.3af/at devices if the additional 48-57 V DC input is used.

If you want to power both 24V passive and 48V active 802.3af/at devices at the same time you need two power supplies.

The CRS will automatically detect and provide the correct voltage to the powered devices.

Max current is 1 A per port if input voltage is 18-28 V, 450 mA if 48-57 V. Total limit is 2.8A@24V and 1.4A@48-57V.

Quick Guide

PDF Brochure

Product code CRS112-8P-4S-IN
Architecture MIPSBE
CPU core count 1
CPU nominal frequency 400 MHz
Switch chip model QCA8511
Dimensions 200 x 142 x 44 mm
RouterOS license 5
Operating System RouterOS
Size of RAM 128 MB
Storage size 16 MB
Storage type FLASH
MTBF Approximately 200'000 hours at 25C
Tested ambient temperature -20°C to 60°C
Number of DC inputs 2 (DC jack)
DC jack input Voltage 18-28 V / 48-57 V
Max power consumption 160 W
Max power consumption without attachments 10 W
Cooling type Passive
10/100/1000 Ethernet ports 8
Number of 1G Ethernet ports with PoE-out 8
SFP ports 4
Serial console port RJ45
Certification & Approvals
Certification CE, EAC, ROHS
PoE-out ports Ether1-Ether8
PoE out 802.3af/at
Max out per port output (input 18-30 V) 1 A
Max out per port output (input 30-57 V) 450 mA
Max total out (A) 2.8A (18V-28V) & 1.4A (48V-57V) A
PCB temperature monitor Yes

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  • Brand: Mikrotik
  • Product Code: CRS112-8P-4S-IN

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Tags: poe-out, 4, crs112-8p-4s-in, 112, desktop, switch, 4sfp, sfp port, poe out, 8, CRS, CRS112, sfp, gbe, poe, mikrotik, power, out