MikroTik · Networking

CRS305-1G-4S+IN

Compact 10G switch · four front SFP+ ports and Gigabit Ethernet · 1U tray or flat shelf placement

Specifications

Model width: 115 mm
Model height: 28 mm
Model depth: 141 mm

Hardware specifications

Processor
CPU	Marvell 98DX3236 · dual-core ARM 32-bit 800 MHz¹
Memory
RAM	512 MB¹
Storage
Storage	16 MB flash¹
Networking
Ethernet	1 × Gigabit RJ45 with 802.3af/at PoE input¹
SFP+	4 × 10G SFP+¹
Switching capacity	82 Gbps non-blocking (L1)¹
Management & software
Operating system	RouterOS / SwOS dual boot¹
Power
Power input	2 × 12–57 V DC jacks or PoE input¹
Power consumption	18 W max · 10 W without attachments¹
Cooling
Cooling	Passive, fanless metal enclosure¹
Physical
Dimensions	115 × 141 × 28 mm (W × D × H)¹
Operating temperature	-40 to 70 °C (tested ambient)¹

mikrotik.com/product/crs305_1g_4s_in

Specifications reviewed 2026-10-06. Hardware revisions and configurations vary; check the sources for your exact unit.

How it fits a 10-inch rack
Placement	Space	Fits
MikroTik CRS305 1U tray	1U · 144 mm deep	T0 fits T0 Plus fits T1/2 Plus fits T1 fits T1 Plus fits T2 fits
10i hex shelf · flat	1U · 154 mm deep	T0 fits T0 Plus fits T1/2 Plus fits T1 fits T1 Plus fits T2 fits
10i hex shelf · upright	3U · 154 mm deep	T0 fits T0 Plus fits T1/2 Plus fits T1 fits T1 Plus fits T2 fits

Configurator check against each catalogue rack, not a physical-fit certification. Depth uses the catalogue model; confirm cable clearance and your hardware revision.

Model & configuration

Official outline fixes orientation: 115 mm port-face width × 141 mm depth × 28 mm reserved height. Original exterior reconstruction with silver enclosure, perforation fields, five physical network sockets, side indicators and dual rear DC inputs. Vent holes are shallow visual details. Rear cable-retention accessory omitted. Fits existing hex shelf flat in 1U including deck. No printable mount included.

Power reference

unknown: Unknown
maximum without attachments: 10 W

Manufacturer maximum without attachments: 10 W; up to 18 W with attachments. SFP module consumption depends on the installed modules. Idle is not published.

MikroTik CRS305-1G-4S+IN specifications

Product & source links

Manufacturer specifications

3D model attribution

Creator: Minirack
Licence: Original Minirack visual reconstruction; not printable CAD