CRS305 and SFP+ connections to RJ45 ports
CRS305 and SFP+ connections to RJ45 ports
I’m ready to consider a Mikrotik CRS305 switch. It has one RJ45 port and four SFP+ ports. The 'poe in' connection is likely for linking to the router or powerline adapter, while the other four ports are probably for connecting your desktop or other devices. To change an SFP+ port to RJ45 you’ll need a compatible cable. The 10GbE capability isn’t necessary for this setup unless you plan to use it for higher-speed links later.
The RJ45 connection on that switch functions as a standard port within the device. It operates at 1Gb instead of 10Gb. The “POE In” indicates the switch can receive power through that Ethernet port when connected to a POE injector or another switch with POE out. Changing an SFP port to RJ45 requires a transceiver equipped with an RJ45 interface. Mikrotik offers such devices for both 1Gb (model S-RJ01) and 10Gb (model S+RJ10), supporting 1, 2.5, 5, and 10Gb speeds.
The price of a 10 GbE switch jumped significantly. Perhaps I should opt for an SFPD card. If I link the switch to a powerline for network access, can I still use the RJ45 port, or must I switch to an SFPD port?
All powerline devices I know use RJ45 connectors. SFP+ remains significantly more affordable for 10Gb compared to RJ45. Many users who take advantage of the lower cost of these switches and larger models aim primarily to establish connections via SFP+—either through DAC (Direct Attach Copper) or by using fiber transceivers and patch cables.
You're correct about the price drop for the SFP+ cable. Since you were planning to purchase multiple 10 gig network cards, you'll need to adjust your order. The average cost is around CAD 30 to 60 per cable. Your powerline device still works as an RJ45 port, which is useful for wired internet access. You can connect devices to the switch using this port, so you won't need to convert it to an SFP+ port.
Checking two SPF NICs and matching cables. Is the ASUS 10G SFP enough or would another option work better?