diff --git a/sega/boards.md b/sega/boards.md
index 734d5cb..ec37607 100644
--- a/sega/boards.md
+++ b/sega/boards.md
@@ -333,7 +333,7 @@ SEGA parts are referred to using a [proprietary format](identifiers.md#part-numb
         GPU: Nvidia GeForce GTX 1060 (N1060-MOFX-RA) [MX2] `#WEB:https://twitter.com/hirayu0611/status/1604344689078849536`
              Nvidia GeForce GTX 1660Ti [MX2.1]
         SSD: TDK GBDisk GS1 120GB [MDA-E0023]
-        HDD: ??? [849-1006, 849-1010]
+        HDD: Western Digital WD5000LUCT 500GB [849-1006, 849-1010]
         SND: Realtek ALC888S
         OS: Windows 10 IoT LTSC 2019
         PSU: FSP FSP500-50AAC
diff --git a/sega/media.md b/sega/media.md
index 0e40948..3cd1102 100644
--- a/sega/media.md
+++ b/sega/media.md
@@ -1441,6 +1441,7 @@ MDA-U0085 : maimai DX                     : ALLS HX2 : EXP : SDGA
          J: ^ VER.1.30
 MDA-U0086 : maimai DX 2021                : ALLS HX2 : CHN : SDGB
          D: maimai DX 2022                : ALLS HX2 : CHN : SDGB #DOC:Wahlap:Maimai DX 2022 Software Upgrading Guidance
+         J: maimai DX 2024                : ALLS HX2 : CHN : SDGB
 MDA-U0087 :
 MDA-U0088G: ALL.Net P-ras MULTI バージョン3 VER1.18
 MDA-U0089 :