How to Set-CasMailbox -ActiveSyncAllowedDeviceIDs (To Allow for all user devices, where I don't know what devices the user has)

Question

I need to change this for all of our users and have created this script so far.  Does anyone know how to Allow for all devices?  
$mailboxes = Get-casMailbox -Filter {hasactivesyncdevicepartnership -eq $true -and -not displayname -like "CAS_{*"} | Get-Mailbox 
foreach ($mailbox in $mailboxes)
    #write-output $mailbox.UserPrincipalName
    $devices = Get-MobileDevice -Mailbox $mailbox.UserPrincipalName
    foreach ($device in $devices){
        #write-output $device.deviceid
          Set-CASMailbox -identity $mailbox.UserPrincipalName -ActiveSyncAllowedDeviceIDs @{Add=$device}
          write-output $mailbox.UserPrincipalName
          write-output $device.deviceid

Answer 1

For Exchange issues post in Exchange.  You should also just try searching.
http://social.technet.microsoft.com/Forums/exchange/en-US/1ddc526d-f147-444c-a7bb-39d14415f9bc/clear-activesyncalloweddeviceids
This was first on list.
¯\_(ツ)_/¯