The Sonnet DuoModo Echo III module enables the connection of up to three PCIe cards to computers that do not have card slots. It supports three full-height and full-length Thunderbolt-compatible PCIe cards, with one x16 and two x8 PCIe 3.0 slots available. The integrated 400W power supply provides sufficient power, even for demanding cards such as Avid Pro Tools | HDX PCIe cards. Two Noctua fans ensure quiet operation and adjust their speed depending on the temperature. The Thunderbolt 3 interface with a bandwidth of 40 Gbit/s provides a PCIe bandwidth of up to 2750 MB/s for installed cards. The module is compatible with Apple M1 and Thunderbolt 4 computers and includes a Thunderbolt 3 cable and a mounting clip for the ThunderLok 3 connector.