diff --git a/profiles/base/accounts/group/usb b/profiles/base/accounts/group/usb
index a0dbffd..5075542 100644
--- a/profiles/base/accounts/group/usb
+++ b/profiles/base/accounts/group/usb
@@ -1,4 +1,5 @@
 group:usb
 gid:85
 # mtp for access to media on phones/tablets; brltty for braille.
-users:mtp,brltty
+# dlm for DisplayLinkManager daemon access to usb.
+users:mtp,brltty,dlm
diff --git a/profiles/base/accounts/group/video b/profiles/base/accounts/group/video
index 379316e..dcb9b47 100644
--- a/profiles/base/accounts/group/video
+++ b/profiles/base/accounts/group/video
@@ -2,4 +2,4 @@
 gid:27
 # Modifying users here might be overwritten by freon overlay.
 # You probably want to modify both here and freon.
-users:root,chronos,arc-camera,xorg
+users:root,chronos,arc-camera,xorg,dlm