The 52-105Mbps upgrade key can only be used on units that are currently capable of 52Mbps operation.
Please upgrade your unit to 52Mbps first.
You can upgrade to 105Mbps steps in 2 ways
Buy an upgrade key that goes straight from 25Mbps to 105Mbps
| WB3585 | PTP 300/500 Series 25 Mbps to 105 Mbps Upgrade Key - Link |
| WB3881 | PTP 300/500 Series 25 Mbps to 105 Mbps Upgrade Key - End only |
or, upgrade in two steps - Upgrade to 52Mbps first using these keys
| WB3584 | PTP 300/500 Series 25 Mbps to 52 Mbps Upgrade Key - Link |
| WB3880 | PTP 300/500 Series 25 Mbps to 52 Mbps Upgrade Key - End only |
and then from 52Mbps to 105Mbps in a second step
| WB3127 | PTP 300/500 Series 52 Mbps to 105 Mbps Upgrade Key - Link |
| WB3128 | PTP 300/500 Series 52 Mbps to 105 Mbps Upgrade Key - End only |