diff --git a/RTL8218B.md b/RTL8218B.md
index cde340c4..79a6d0a4 100644
--- a/RTL8218B.md
+++ b/RTL8218B.md
@@ -187,7 +187,7 @@ Page | Register | Bits | Feature | Documentation
 **Page** | **Register** | **Bits** | **Unknown SerDes - page unknown** | **Absolute 0x2269**
 0x44d | 0x11 | 15:00 | | 
 **Page** | **Register** | **Bits** | **Unknown SerDes - page unknown** | **Absolute 0x2271**
-0x44e | 0x11 | 15:00 | | Some unknown register for fiber jitter 
+0x44e | 0x11 | 15:00 | | Some unknown register for fiber jitter on RTL8214FC
 **Page** | **Register** | **Bits** | **Unknown filter register** | **Absolute 0x2310**
 0x462 | 0x10 | 13:12 | OFFSET_CALIBRATION
 **Page** | **Register** | **Bits** | **Unknown filter register 1** | **Absolute 0x2322**