These boxes have all the features of a Sky+ box, as well as a HDMI output, and the early Thomson DSI8215 model has component video output. Both SATA and Ethernet ports are also supplied, currently used for the Sky Anytime+ service. As well as requiring a Sky+ subscription or any subscription, HD versions of the subscription channels require the payment of an additional £10.25 (or €15) per month, although HD channels can be viewed on free-to-air services such as BBC One HD, BBC Two HD, BBC Three HD, BBC Four HD, CBBC HD, ITV HD, ITVBe HD, Channel 4 HD, NHK World HD and with a Freesat from Sky card, Channel 5 HD.