Yes, there are now several Zwave and Zigbee dongles supported. See the list below.

The ZMatter board (despite the name) isn't involved at all with Matter, Matter uses IPv6 through your network interface. So whatever Matter functionality you currently have will remain the same.

Z-Wave

Requires an external dongle (not included):

1. AeoTec Z-Stick 10 Pro – Dual protocol Zigbee/Z-Wave [ link ]

2. Sonoff Z-Wave 800 Dongle Plus [ link ]

3. Zooz 800 Z-Wave USB Stick [ link ]

Zigbee

Requires an external dongle (not included):

1. AeoTec Z-Stick 10 Pro – Dual protocol Zigbee/Z-Wave [ link ]

2. Sonoff Zigbee 3.0 USB Dongle Plus [ link ]

@SHM

Take a look at this post

Zooz Zwave 800LR dongle - Review - eisy - Universal Devices Forum

1 hour ago, Guy Lavoie said:

The ZMatter board (despite the name) isn't involved at all with Matter

That does not sound right to me. Is it, possibly, needed if one wants to use matter-over-thread?

2 hours ago, SHM said:

My Eisy has the internal Z matter board which is z wave 700. Is there matter board with z wave 800? I do have some matter devices so would need to keep that functionality.

Do you mean ZMatter board installed in Polisy? I’m not aware of a way to put it in eISY.

Edited 11 hours ago11 hr by hart2hart

24 minutes ago, oberkc said:

That does not sound right to me. Is it, possibly, needed if one wants to use matter-over-thread?

I think that was the initial plan. But even the latest release announcement tells us that you need a border router for Thread, and the Zmatter device is now discontinued.

Some Matter devices don't require a border router, it depends what type of matter device you have and whether it supports Wi-Fi or Thread

Border Router Requirements:

• Matter over Wi-Fi / Ethernet: No border router is needed because these devices connect directly to your home network.

• Matter over Thread: A Thread border router is required to bridge the low-power Thread mesh network to your main IP network. The eisy controller does not have a built-in Thread radio.

Of the zwave dongle choices listed above, I’d be prone to favor the sonnoff because based on measurements it is possibly that’s a full 1/2 wave dipole antenna. Thoughts?

Edited 8 hours ago8 hr by hart2hart