25gb

Anyone have experience with these? I'm eyeing a new in box one, but not sure if I need a subscription, licenses, or anything else to use it. I'm hoping to plug it in and it work out of the box. Any insight would be greatly appreciated, thanks!

First post after 10 years of reading. edit: nevermind: Maybe a deal: Dell 4GMN7 BROADCOM 57404 25GBE DUAL SFP PORT NIC ADAPTER - QTY Avail - FastShip | eBay edit: more cheaper: DELL BROADCOM 57404 DUAL PORT 25GB SFP28 FULL PROFILE NETWORK ADAPTER CARD 7M8VP | eBay edit: everywhere: Dell...