Most modern Virgin Media connections will auto-provision. However, if you bought a used RG248WQ, you may need to call Virgin Media (or your small cable reseller like VMO2) and provide the (printed on the bottom sticker). They need to whitelist the device.
UK models typically feature 4GB RAM and 64GB internal storage , expandable up to 512GB via a dedicated microSD slot. motorola rg248wq uk