Arista SFP Port Licensing Question

Hi, I'm looking at a used Arista DCS-7050T-64-F Switch 48x 10G SFP 4x 40G QSFP+ Port Switch. https://www.ebay.com/itm/264525177426

Does anyone know if I need licensing to use this switch? I'm not looking to do anything beyond using it to connect our computers to our on site NAS at 10gb/40gb speeds. I've been trying to get ahold of someone at Arista.. without any luck.

Thanks!