diff --git a/spec/index.bs b/spec/index.bs
index 32286d95a6..44b3c65f0f 100644
--- a/spec/index.bs
+++ b/spec/index.bs
@@ -1540,7 +1540,7 @@ including the absence of those values.
 interface GPUAdapterInfo {
   readonly attribute DOMString vendor;
   readonly attribute DOMString architecture;
-  readonly attribute long deviceId;
+  readonly attribute DOMString device;
   readonly attribute DOMString description;
 };
 </script>
@@ -1557,9 +1557,9 @@ interface GPUAdapterInfo {
         The name of the family or class of GPUs the [=adapter=] belongs to, if avaliable. Empty
         string otherwise.
 
-    : <dfn>deviceId</dfn>
+    : <dfn>device</dfn>
     ::
-        A vendor-specific ID for the [=adapter=], if available. `0` otherwise.
+        A vendor-specific identifier for the [=adapter=], if available. Empty string otherwise.
 
         Note: This is a value that represents the type of adapter. For example, it may be a
         [PCI device ID](https://pcisig.com/). It does not uniquely identify a given piece of
@@ -1601,14 +1601,15 @@ interface GPUAdapterInfo {
         1. Set |adapterInfo|.{{GPUAdapterInfo/architecture}} to the empty string or a
             reasonable approximation of the architecture as a [=normalized identifier string=].
 
-    1. If |unmaskedValues| [=set/contains=] `"deviceId"` and the deviceId is known:
-        1. Set |adapterInfo|.{{GPUAdapterInfo/deviceId}} to a vendor-specific numeric ID for
-            |adapter|.
+    1. If |unmaskedValues| [=set/contains=] `"device"` and the device is known:
+        1. Set |adapterInfo|.{{GPUAdapterInfo/device}} to a to a [=normalized identifier string=]
+             reprenting a vendor-specific indetifier for |adapter|.
 
         Otherwise:
 
-        1. Set |adapterInfo|.{{GPUAdapterInfo/deviceId}} to `0` or a reasonable
-            approximation of the vendor-specific numeric ID for |adapter|.
+        1. Set |adapterInfo|.{{GPUAdapterInfo/device}} to to the empty string or a
+            reasonable approximation of a vendor-specific indetifier as a [=normalized identifier
+            string=].
 
     1. If |unmaskedValues| [=set/contains=] `"description"` and a description is known:
         1. Set |adapterInfo|.{{GPUAdapterInfo/description}} to a description of the |adapter| as
@@ -1636,6 +1637,7 @@ interface GPUAdapterInfo {
     Examples of valid normalized identifier strings include:
         - `gpu`
         - `3d`
+        - `0x3b2f`
         - `next-gen`
         - `series-x20-ultra`
     </div>