These things won’t help if the binding does not support the dongle 
. This dongle, while it’s an Ember inside, uses custom firmware.
As suggested above, the HUSBSB-1 is a good option in the US as it also contains ZWave.
Otherwise, the Telegesis ETRX357 dongle is well supported, but does not have a good upgrade path (although that said, the HUSBZB-1 is also limited in this respect because it doesn’t contain a bootloader so also can’t be updated).
In Europe there is another dongle made by Bitron and sold by Qivicon which includes the EM357 - it will work well under Linux, but as it has non-standard device codes, it’s not recognised in Windows or Mac.
The other option is the TI2531 based dongles - these are ok, but have issues at the moment with support. I’m currently rewriting the driver for this so hopefully the newer firmware will be supported in future.