The CCR2004-16G-2S+PC has 2 SFP+ ports and 1 POE-In ports and I am wondering how to use it. I was thinking to use a POE switch and connecting one SFP+ port to the router sfp+port and 1 1G port to the switch to power it. Would it work though? Is this the expected usage?

I don't think the CCR2004 has a PoE-In !

According to https://mikrotik.com/product/ccr2004_16g_2s_ , it does not have POE-IN.

According to https://mikrotik.com/product/ccr2004_16g_2s_ , it does not have POE-IN.

I was talking about the coming version (PC) announced in the video. According this version it will have POE-IN.

Ahhh ok !

Ja, of course it will work !
Just make sure your PoE-Switch can supply the PoE 802.3bt (45W or 60W)

https://mikrotik.com/products/matrix

CCR2004-16G-2S+PC's POE-in was excepted. Not working.

The CCR2004-16G-2S+PC has 2 SFP+ ports and 1 POE-In ports and I am wondering how to use it. I was thinking to use a POE switch and connecting one SFP+ port to the router sfp+port and 1 1G port to the switch to power it. Would it work though? Is this the expected usage?

I do NOT recommend you run your router with PoE, especially if you use the DHCP server in your router..

From experience.. Switch reboots and drops the ports and power.. Ports come back up, hosts start looking for a DHCP server.. PoE comes up and router starts to boot.. Hosts' DHCP times out before router is fully up to hand out IPs.. Hosts pick their own RFC3927 address and remain offline. Some hosts retry the DHCP discovery and come online properly..

Hosts' DHCP times out before router is fully up to hand out IPs.. Hosts pick their own RFC3927 address and remain offline. Some hosts retry the DHCP discovery and come online properly..

Once the router is back, run a script on the switch disabling all client switch ports and reenabling them after some seconds. The link down/up will trigger DHCP renewal for wired clients.
On a MT switch running ROS, this can be automated using a startup script with a proper delay for the router to boot.

Once the router is back, run a script on the switch disabling all client switch ports and reenabling them after some seconds. The link down/up will trigger DHCP renewal for wired clients.
On a MT switch running ROS, this can be automated using a startup script with a proper delay for the router to boot.

Yes, if RoS.. Too many ways for it to go wrong or not work at all.. Dumb switches for example, non Mikrotik switches, some will be easier than others to code this.

So, as a rule, except in special cases, don't PoE power your router.