Brother TC-4100 Tower Tray Adaptor The TC‐4100 Tower Tray Connector option is required when using the TT‐4000 Optional Tower Tray with the Brother HL‐L9310CDW, HL‐L9430CDN, HL‐L9470CDN, HL‐EX470W, MFC‐L9570CDW, MFC‐L9630CDN, MFC‐L9670CDN, and MFC‐EX670W.