diff --git a/RTL8218B.md b/RTL8218B.md
index 68860817..7b8eb6eb 100644
--- a/RTL8218B.md
+++ b/RTL8218B.md
@@ -1,4 +1,4 @@
-RTL8214FC/RTL8218B Register Layout
+RTL8214FC/RTL8218B (maybe generic RTL821x) Register Layout
 
 This is a sum up of what we got from the comments in the GPL sources. Additionally some SerDes registers where identified that work similar like the RTL838x/RTL839x built in SerDes.
 
@@ -112,7 +112,6 @@ Page | Register | Bits | Feature | Documentation
 0x424 | 0x17 | 07:04 | BYP_START | 
 0x424 | 0x17 | 03:00 | BYP_END | 
 **Page** | **Register** | **Bits** | **MAC SerDes 1 - page unknown** | **Absolute 0x2169**
-0x42d | 0x11 | 15:01 | ?
 0x42d | 0x11 | 00:00 | ANA_RESET
 **Page** | **Register** | **Bits** | **Unknown filter register** | **Absolute 0x2322**
 0x464 | 0x12 | 15:11 | FILTER_0
@@ -122,3 +121,6 @@ Page | Register | Bits | Feature | Documentation
 0x464 | 0x13 | 04:00 | FILTER_1
 **Page** | **Register** | **Bits** | **Unknown CMU register** | **Absolute 0x233c**
 0x467 | 0x14 | 15:0 | UNKNOWN | For CMU reset write 0x143d, 0x3c15, 0x3c17, 0x0000
+**Page** | **Register** | **Bits** | **Unknown CMU register** | **Absolute 0x2521**
+0x4a3 | 0x19 | 05:05 | PHY_EEE_ENABLE
+0x4a3 | 0x19 | 00:00 | CLKOUT_EN